Fix recursive loading, closes #605

260 files changed, 780 insertions, 260 deletions

diff --git a/ftplugin/8th.vim b/ftplugin/8th.vim
index f6877548..befe694b 100644
--- a/ftplugin/8th.vim
+++ b/ftplugin/8th.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/8th.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/8th.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/a2ps.vim b/ftplugin/a2ps.vim
index 052a9fb8..d92fdf64 100644
--- a/ftplugin/a2ps.vim
+++ b/ftplugin/a2ps.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/a2ps.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/a2ps.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/aap.vim b/ftplugin/aap.vim
index d9f3213c..2d900318 100644
--- a/ftplugin/aap.vim
+++ b/ftplugin/aap.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/aap.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/aap.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/abap.vim b/ftplugin/abap.vim
index 0ecefa79..96ab0d56 100644
--- a/ftplugin/abap.vim
+++ b/ftplugin/abap.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/abap.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/abap.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/abaqus.vim b/ftplugin/abaqus.vim
index f6d21fa1..2214d4f4 100644
--- a/ftplugin/abaqus.vim
+++ b/ftplugin/abaqus.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/abaqus.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/abaqus.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ada.vim b/ftplugin/ada.vim
index 19dbdd20..1d067182 100644
--- a/ftplugin/ada.vim
+++ b/ftplugin/ada.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ada.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ada.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/alsaconf.vim b/ftplugin/alsaconf.vim
index 5aac50a4..a481b76a 100644
--- a/ftplugin/alsaconf.vim
+++ b/ftplugin/alsaconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/alsaconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/alsaconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ansible.vim b/ftplugin/ansible.vim
index 32b30474..cef2e9c4 100644
--- a/ftplugin/ansible.vim
+++ b/ftplugin/ansible.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ansible.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ansible.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ansible_hosts.vim b/ftplugin/ansible_hosts.vim
index d93ef6f8..6f819a7e 100644
--- a/ftplugin/ansible_hosts.vim
+++ b/ftplugin/ansible_hosts.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ansible_hosts.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ansible_hosts.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ant.vim b/ftplugin/ant.vim
index a69d4df0..184818a5 100644
--- a/ftplugin/ant.vim
+++ b/ftplugin/ant.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ant.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ant.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/arch.vim b/ftplugin/arch.vim
index e674fdb0..5910287e 100644
--- a/ftplugin/arch.vim
+++ b/ftplugin/arch.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/arch.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/arch.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/art.vim b/ftplugin/art.vim
index 65d411dc..edbc86a3 100644
--- a/ftplugin/art.vim
+++ b/ftplugin/art.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/art.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/art.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/aspvbs.vim b/ftplugin/aspvbs.vim
index 6c3c53df..4899bfb3 100644
--- a/ftplugin/aspvbs.vim
+++ b/ftplugin/aspvbs.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/aspvbs.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/aspvbs.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/automake.vim b/ftplugin/automake.vim
index f5c92bcc..ed47025c 100644
--- a/ftplugin/automake.vim
+++ b/ftplugin/automake.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/automake.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/automake.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/awk.vim b/ftplugin/awk.vim
index 764edfd9..9bbeb276 100644
--- a/ftplugin/awk.vim
+++ b/ftplugin/awk.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/awk.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/awk.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/bdf.vim b/ftplugin/bdf.vim
index ae22bf31..74b50871 100644
--- a/ftplugin/bdf.vim
+++ b/ftplugin/bdf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/bdf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/bdf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/blade.vim b/ftplugin/blade.vim
index 81020de7..4fa102d9 100644
--- a/ftplugin/blade.vim
+++ b/ftplugin/blade.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/blade.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/blade.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/bst.vim b/ftplugin/bst.vim
index 5e49c1bc..2539a109 100644
--- a/ftplugin/bst.vim
+++ b/ftplugin/bst.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/bst.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/bst.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/bzl.vim b/ftplugin/bzl.vim
index c65643a4..69c95d1d 100644
--- a/ftplugin/bzl.vim
+++ b/ftplugin/bzl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/bzl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/bzl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/caddyfile.vim b/ftplugin/caddyfile.vim
index 5d480987..f9725ee2 100644
--- a/ftplugin/caddyfile.vim
+++ b/ftplugin/caddyfile.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/caddyfile.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/caddyfile.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/calendar.vim b/ftplugin/calendar.vim
index b5af5c1e..12f84394 100644
--- a/ftplugin/calendar.vim
+++ b/ftplugin/calendar.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/calendar.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/calendar.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cdrdaoconf.vim b/ftplugin/cdrdaoconf.vim
index 478aaf9d..f048ef9f 100644
--- a/ftplugin/cdrdaoconf.vim
+++ b/ftplugin/cdrdaoconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cdrdaoconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cdrdaoconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cfg.vim b/ftplugin/cfg.vim
index 472e5240..6ed841bb 100644
--- a/ftplugin/cfg.vim
+++ b/ftplugin/cfg.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cfg.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cfg.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ch.vim b/ftplugin/ch.vim
index 5222c5e8..cd71d7ec 100644
--- a/ftplugin/ch.vim
+++ b/ftplugin/ch.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ch.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ch.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/clojure.vim b/ftplugin/clojure.vim
index c04de2e3..6862f35d 100644
--- a/ftplugin/clojure.vim
+++ b/ftplugin/clojure.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/clojure.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/clojure.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cobol.vim b/ftplugin/cobol.vim
index dec2d8c6..1441dfb0 100644
--- a/ftplugin/cobol.vim
+++ b/ftplugin/cobol.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cobol.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cobol.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/coffee.vim b/ftplugin/coffee.vim
index 86a3e82f..84fa245c 100644
--- a/ftplugin/coffee.vim
+++ b/ftplugin/coffee.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/coffee.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/coffee.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/conf.vim b/ftplugin/conf.vim
index 3e6a4573..244827cb 100644
--- a/ftplugin/conf.vim
+++ b/ftplugin/conf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/conf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/conf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/config.vim b/ftplugin/config.vim
index 050c6f00..dbd82347 100644
--- a/ftplugin/config.vim
+++ b/ftplugin/config.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/config.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/config.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/crm.vim b/ftplugin/crm.vim
index 83076461..0ca01cd8 100644
--- a/ftplugin/crm.vim
+++ b/ftplugin/crm.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/crm.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/crm.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cryptol/folding.vim b/ftplugin/cryptol/folding.vim
index d516f61f..1dcdc109 100644
--- a/ftplugin/cryptol/folding.vim
+++ b/ftplugin/cryptol/folding.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cryptol/folding.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cryptol/folding.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/crystal.vim b/ftplugin/crystal.vim
index eb8e8974..5f4e981b 100644
--- a/ftplugin/crystal.vim
+++ b/ftplugin/crystal.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/crystal.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/crystal.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cs.vim b/ftplugin/cs.vim
index 72dbdfe0..9ee46231 100644
--- a/ftplugin/cs.vim
+++ b/ftplugin/cs.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cs.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cs.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/csc.vim b/ftplugin/csc.vim
index 908a027a..b0648a81 100644
--- a/ftplugin/csc.vim
+++ b/ftplugin/csc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/csc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/csc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/css.vim b/ftplugin/css.vim
index 6209091b..50d8f714 100644
--- a/ftplugin/css.vim
+++ b/ftplugin/css.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/css.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/css.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/csv.vim b/ftplugin/csv.vim
index 125d06ed..40d5f95c 100644
--- a/ftplugin/csv.vim
+++ b/ftplugin/csv.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/csv.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/csv.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cucumber.vim b/ftplugin/cucumber.vim
index 10254153..94246791 100644
--- a/ftplugin/cucumber.vim
+++ b/ftplugin/cucumber.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cucumber.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cucumber.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/cvsrc.vim b/ftplugin/cvsrc.vim
index 705787b9..84d059d7 100644
--- a/ftplugin/cvsrc.vim
+++ b/ftplugin/cvsrc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/cvsrc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/cvsrc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dart.vim b/ftplugin/dart.vim
index 147e657d..52ac5bae 100644
--- a/ftplugin/dart.vim
+++ b/ftplugin/dart.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dart.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dart.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/debchangelog.vim b/ftplugin/debchangelog.vim
index 355826f7..ba8b046b 100644
--- a/ftplugin/debchangelog.vim
+++ b/ftplugin/debchangelog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/debchangelog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/debchangelog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/debcontrol.vim b/ftplugin/debcontrol.vim
index 647d5942..767fbb8f 100644
--- a/ftplugin/debcontrol.vim
+++ b/ftplugin/debcontrol.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/debcontrol.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/debcontrol.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/denyhosts.vim b/ftplugin/denyhosts.vim
index 3cadf87f..35f1245b 100644
--- a/ftplugin/denyhosts.vim
+++ b/ftplugin/denyhosts.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/denyhosts.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/denyhosts.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dhall.vim b/ftplugin/dhall.vim
index 983877c0..76a6bd22 100644
--- a/ftplugin/dhall.vim
+++ b/ftplugin/dhall.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dhall.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dhall.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dictconf.vim b/ftplugin/dictconf.vim
index 22f10401..2b5467ce 100644
--- a/ftplugin/dictconf.vim
+++ b/ftplugin/dictconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dictconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dictconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dictdconf.vim b/ftplugin/dictdconf.vim
index 8f229104..2d404814 100644
--- a/ftplugin/dictdconf.vim
+++ b/ftplugin/dictdconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dictdconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dictdconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/diff.vim b/ftplugin/diff.vim
index 226956ca..d6ff42bc 100644
--- a/ftplugin/diff.vim
+++ b/ftplugin/diff.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/diff.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/diff.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dircolors.vim b/ftplugin/dircolors.vim
index b9b2549e..9043b649 100644
--- a/ftplugin/dircolors.vim
+++ b/ftplugin/dircolors.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dircolors.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dircolors.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/docker-compose.vim b/ftplugin/docker-compose.vim
index 8e5c4fd3..df33d6fd 100644
--- a/ftplugin/docker-compose.vim
+++ b/ftplugin/docker-compose.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/docker-compose.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/docker-compose.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dockerfile.vim b/ftplugin/dockerfile.vim
index 239fd78c..950a48bc 100644
--- a/ftplugin/dockerfile.vim
+++ b/ftplugin/dockerfile.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dockerfile.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dockerfile.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dosbatch.vim b/ftplugin/dosbatch.vim
index a90f06b7..ada06865 100644
--- a/ftplugin/dosbatch.vim
+++ b/ftplugin/dosbatch.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dosbatch.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dosbatch.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dosini.vim b/ftplugin/dosini.vim
index 3e2689c0..1a841bf6 100644
--- a/ftplugin/dosini.vim
+++ b/ftplugin/dosini.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dosini.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dosini.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dtd.vim b/ftplugin/dtd.vim
index 71e7535a..26ad5061 100644
--- a/ftplugin/dtd.vim
+++ b/ftplugin/dtd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dtd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dtd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/dune.vim b/ftplugin/dune.vim
index 6a6a88e9..fde69ca6 100644
--- a/ftplugin/dune.vim
+++ b/ftplugin/dune.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/dune.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/dune.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ecrystal.vim b/ftplugin/ecrystal.vim
index 0aa94254..d4854095 100644
--- a/ftplugin/ecrystal.vim
+++ b/ftplugin/ecrystal.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ecrystal.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ecrystal.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/eelixir.vim b/ftplugin/eelixir.vim
index 06b74eec..764ded0d 100644
--- a/ftplugin/eelixir.vim
+++ b/ftplugin/eelixir.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/eelixir.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/eelixir.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/elinks.vim b/ftplugin/elinks.vim
index 57150b99..ed6cdd68 100644
--- a/ftplugin/elinks.vim
+++ b/ftplugin/elinks.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/elinks.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/elinks.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/elixir.vim b/ftplugin/elixir.vim
index 2889a446..db05c990 100644
--- a/ftplugin/elixir.vim
+++ b/ftplugin/elixir.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/elixir.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/elixir.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/embeddedpuppet.vim b/ftplugin/embeddedpuppet.vim
index 0a3ccf6f..c369e5c3 100644
--- a/ftplugin/embeddedpuppet.vim
+++ b/ftplugin/embeddedpuppet.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/embeddedpuppet.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/embeddedpuppet.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ember-script.vim b/ftplugin/ember-script.vim
index a1436b7b..41f53442 100644
--- a/ftplugin/ember-script.vim
+++ b/ftplugin/ember-script.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ember-script.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ember-script.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/emblem.vim b/ftplugin/emblem.vim
index 7ddba5c2..655c843b 100644
--- a/ftplugin/emblem.vim
+++ b/ftplugin/emblem.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/emblem.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/emblem.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/eruby.vim b/ftplugin/eruby.vim
index cd3e8be1..3dc549ed 100644
--- a/ftplugin/eruby.vim
+++ b/ftplugin/eruby.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/eruby.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/eruby.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/eterm.vim b/ftplugin/eterm.vim
index 33fa42f6..135d75f8 100644
--- a/ftplugin/eterm.vim
+++ b/ftplugin/eterm.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/eterm.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/eterm.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/falcon.vim b/ftplugin/falcon.vim
index c1095b58..d278f58c 100644
--- a/ftplugin/falcon.vim
+++ b/ftplugin/falcon.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/falcon.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/falcon.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/fennel.vim b/ftplugin/fennel.vim
index 3dc46a7b..5fb9afb6 100644
--- a/ftplugin/fennel.vim
+++ b/ftplugin/fennel.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/fennel.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/fennel.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/fetchmail.vim b/ftplugin/fetchmail.vim
index a9d2abc9..a995bdfd 100644
--- a/ftplugin/fetchmail.vim
+++ b/ftplugin/fetchmail.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/fetchmail.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/fetchmail.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/fish.vim b/ftplugin/fish.vim
index 85bae2dc..e79c0669 100644
--- a/ftplugin/fish.vim
+++ b/ftplugin/fish.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/fish.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/fish.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/fortran.vim b/ftplugin/fortran.vim
index ca1e4ab4..4c7d7cdf 100644
--- a/ftplugin/fortran.vim
+++ b/ftplugin/fortran.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/fortran.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/fortran.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/framescript.vim b/ftplugin/framescript.vim
index 48dd0d66..4ad99bf3 100644
--- a/ftplugin/framescript.vim
+++ b/ftplugin/framescript.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/framescript.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/framescript.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/fvwm.vim b/ftplugin/fvwm.vim
index ad662455..201a28b5 100644
--- a/ftplugin/fvwm.vim
+++ b/ftplugin/fvwm.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/fvwm.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/fvwm.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gdb.vim b/ftplugin/gdb.vim
index 49606b74..1f4ed1a8 100644
--- a/ftplugin/gdb.vim
+++ b/ftplugin/gdb.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gdb.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gdb.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/git.vim b/ftplugin/git.vim
index b5401255..78352e84 100644
--- a/ftplugin/git.vim
+++ b/ftplugin/git.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/git.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/git.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gitcommit.vim b/ftplugin/gitcommit.vim
index a770f911..cc5c4208 100644
--- a/ftplugin/gitcommit.vim
+++ b/ftplugin/gitcommit.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gitcommit.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gitcommit.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gitconfig.vim b/ftplugin/gitconfig.vim
index 7d333642..f9a935d9 100644
--- a/ftplugin/gitconfig.vim
+++ b/ftplugin/gitconfig.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gitconfig.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gitconfig.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gitignore.vim b/ftplugin/gitignore.vim
index 09e7a5ed..ce45c58f 100644
--- a/ftplugin/gitignore.vim
+++ b/ftplugin/gitignore.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gitignore.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gitignore.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gitrebase.vim b/ftplugin/gitrebase.vim
index c471e505..8e217806 100644
--- a/ftplugin/gitrebase.vim
+++ b/ftplugin/gitrebase.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gitrebase.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gitrebase.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gitsendemail.vim b/ftplugin/gitsendemail.vim
index 38fe9a94..1ef62bd3 100644
--- a/ftplugin/gitsendemail.vim
+++ b/ftplugin/gitsendemail.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gitsendemail.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gitsendemail.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/gpg.vim b/ftplugin/gpg.vim
index bcac352d..8d142e8b 100644
--- a/ftplugin/gpg.vim
+++ b/ftplugin/gpg.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/gpg.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/gpg.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/graphql.vim b/ftplugin/graphql.vim
index 5a4aabb5..6a3cbf30 100644
--- a/ftplugin/graphql.vim
+++ b/ftplugin/graphql.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/graphql.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/graphql.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/groovy.vim b/ftplugin/groovy.vim
index 5ad1d552..ae879781 100644
--- a/ftplugin/groovy.vim
+++ b/ftplugin/groovy.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/groovy.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/groovy.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/group.vim b/ftplugin/group.vim
index 82a90570..92aa848f 100644
--- a/ftplugin/group.vim
+++ b/ftplugin/group.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/group.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/group.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/grub.vim b/ftplugin/grub.vim
index 2e91a311..fe1a3fbd 100644
--- a/ftplugin/grub.vim
+++ b/ftplugin/grub.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/grub.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/grub.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/haml.vim b/ftplugin/haml.vim
index c5b216e5..c262cc3a 100644
--- a/ftplugin/haml.vim
+++ b/ftplugin/haml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/haml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/haml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hamster.vim b/ftplugin/hamster.vim
index c89527b6..341a762d 100644
--- a/ftplugin/hamster.vim
+++ b/ftplugin/hamster.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hamster.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hamster.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/handlebars.vim b/ftplugin/handlebars.vim
index ef56d4c1..2dfb1aeb 100644
--- a/ftplugin/handlebars.vim
+++ b/ftplugin/handlebars.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/handlebars.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/handlebars.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hcl.vim b/ftplugin/hcl.vim
index f7e9a57a..1c5a830a 100644
--- a/ftplugin/hcl.vim
+++ b/ftplugin/hcl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hcl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hcl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/help.vim b/ftplugin/help.vim
index 92fc165c..b320d73a 100644
--- a/ftplugin/help.vim
+++ b/ftplugin/help.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/help.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/help.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hgcommit.vim b/ftplugin/hgcommit.vim
index 6c449321..fbcf6143 100644
--- a/ftplugin/hgcommit.vim
+++ b/ftplugin/hgcommit.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hgcommit.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hgcommit.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hive.vim b/ftplugin/hive.vim
index a95a17ad..f5884dd8 100644
--- a/ftplugin/hive.vim
+++ b/ftplugin/hive.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hive.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hive.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hog.vim b/ftplugin/hog.vim
index bd0ef9ff..edceb700 100644
--- a/ftplugin/hog.vim
+++ b/ftplugin/hog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hostconf.vim b/ftplugin/hostconf.vim
index 72b955bd..badef7ee 100644
--- a/ftplugin/hostconf.vim
+++ b/ftplugin/hostconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hostconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hostconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/hostsaccess.vim b/ftplugin/hostsaccess.vim
index 72434da3..60216fac 100644
--- a/ftplugin/hostsaccess.vim
+++ b/ftplugin/hostsaccess.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/hostsaccess.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/hostsaccess.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/html.vim b/ftplugin/html.vim
index f78f9d77..df1e6a28 100644
--- a/ftplugin/html.vim
+++ b/ftplugin/html.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/html.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/html.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/htmldjango.vim b/ftplugin/htmldjango.vim
index 92ca3fe4..3e512e67 100644
--- a/ftplugin/htmldjango.vim
+++ b/ftplugin/htmldjango.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/htmldjango.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/htmldjango.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/i3config.vim b/ftplugin/i3config.vim
index 628d01ce..36b8b8f9 100644
--- a/ftplugin/i3config.vim
+++ b/ftplugin/i3config.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/i3config.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/i3config.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/idris.vim b/ftplugin/idris.vim
index 454591a5..9827033b 100644
--- a/ftplugin/idris.vim
+++ b/ftplugin/idris.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/idris.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/idris.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/idris2.vim b/ftplugin/idris2.vim
index 7e39f23e..89395311 100644
--- a/ftplugin/idris2.vim
+++ b/ftplugin/idris2.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/idris2.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/idris2.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/indent.vim b/ftplugin/indent.vim
index f426b9b3..5a0d6c35 100644
--- a/ftplugin/indent.vim
+++ b/ftplugin/indent.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/indent.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/indent.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ion.vim b/ftplugin/ion.vim
index c6cfd8a5..9db5c7a2 100644
--- a/ftplugin/ion.vim
+++ b/ftplugin/ion.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ion.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ion.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/j.vim b/ftplugin/j.vim
index 9dd87d9d..577cbd9d 100644
--- a/ftplugin/j.vim
+++ b/ftplugin/j.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/j.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/j.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/java.vim b/ftplugin/java.vim
index 97a4af13..82953812 100644
--- a/ftplugin/java.vim
+++ b/ftplugin/java.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/java.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/java.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/jproperties.vim b/ftplugin/jproperties.vim
index f9c282c1..5839c997 100644
--- a/ftplugin/jproperties.vim
+++ b/ftplugin/jproperties.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/jproperties.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/jproperties.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/jq.vim b/ftplugin/jq.vim
index 2fd91c55..fab7f20f 100644
--- a/ftplugin/jq.vim
+++ b/ftplugin/jq.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/jq.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/jq.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/json.vim b/ftplugin/json.vim
index 682f24e9..9b2d9056 100644
--- a/ftplugin/json.vim
+++ b/ftplugin/json.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/json.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/json.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/jsonnet.vim b/ftplugin/jsonnet.vim
index b18fb7d4..4c35558e 100644
--- a/ftplugin/jsonnet.vim
+++ b/ftplugin/jsonnet.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/jsonnet.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/jsonnet.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/jsp.vim b/ftplugin/jsp.vim
index c5eb1ae7..9e186dc5 100644
--- a/ftplugin/jsp.vim
+++ b/ftplugin/jsp.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/jsp.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/jsp.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/julia.vim b/ftplugin/julia.vim
index 96aaca5b..48845421 100644
--- a/ftplugin/julia.vim
+++ b/ftplugin/julia.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/julia.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/julia.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/juliadoc.vim b/ftplugin/juliadoc.vim
index 66c7f556..9212e287 100644
--- a/ftplugin/juliadoc.vim
+++ b/ftplugin/juliadoc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/juliadoc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/juliadoc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/kconfig.vim b/ftplugin/kconfig.vim
index f25135f4..970e4abe 100644
--- a/ftplugin/kconfig.vim
+++ b/ftplugin/kconfig.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/kconfig.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/kconfig.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/kotlin.vim b/ftplugin/kotlin.vim
index 9c85505f..a9eb39cf 100644
--- a/ftplugin/kotlin.vim
+++ b/ftplugin/kotlin.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/kotlin.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/kotlin.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/kwt.vim b/ftplugin/kwt.vim
index 152b8903..49953976 100644
--- a/ftplugin/kwt.vim
+++ b/ftplugin/kwt.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/kwt.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/kwt.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ld.vim b/ftplugin/ld.vim
index 3a6d6647..1b9730d9 100644
--- a/ftplugin/ld.vim
+++ b/ftplugin/ld.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ld.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ld.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/less.vim b/ftplugin/less.vim
index eb9d5b84..1eabb7b3 100644
--- a/ftplugin/less.vim
+++ b/ftplugin/less.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/less.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/less.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/lftp.vim b/ftplugin/lftp.vim
index a3ee81a8..4f246ecd 100644
--- a/ftplugin/lftp.vim
+++ b/ftplugin/lftp.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/lftp.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/lftp.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/libao.vim b/ftplugin/libao.vim
index cf3469a5..154ac0ce 100644
--- a/ftplugin/libao.vim
+++ b/ftplugin/libao.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/libao.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/libao.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/lilypond.vim b/ftplugin/lilypond.vim
index f8462fa3..0f19b5cf 100644
--- a/ftplugin/lilypond.vim
+++ b/ftplugin/lilypond.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/lilypond.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/lilypond.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/limits.vim b/ftplugin/limits.vim
index 6dec8a52..6990030f 100644
--- a/ftplugin/limits.vim
+++ b/ftplugin/limits.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/limits.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/limits.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/liquid.vim b/ftplugin/liquid.vim
index c7e42872..75b093b9 100644
--- a/ftplugin/liquid.vim
+++ b/ftplugin/liquid.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/liquid.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/liquid.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/lisp.vim b/ftplugin/lisp.vim
index 8de27ece..d706128c 100644
--- a/ftplugin/lisp.vim
+++ b/ftplugin/lisp.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/lisp.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/lisp.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/litcoffee.vim b/ftplugin/litcoffee.vim
index f0c84c70..6b70fe8b 100644
--- a/ftplugin/litcoffee.vim
+++ b/ftplugin/litcoffee.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/litcoffee.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/litcoffee.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/llvm.vim b/ftplugin/llvm.vim
index 109dbb51..dcb43a4b 100644
--- a/ftplugin/llvm.vim
+++ b/ftplugin/llvm.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/llvm.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/llvm.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/logcheck.vim b/ftplugin/logcheck.vim
index 1dbcf551..fb90af64 100644
--- a/ftplugin/logcheck.vim
+++ b/ftplugin/logcheck.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/logcheck.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/logcheck.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/loginaccess.vim b/ftplugin/loginaccess.vim
index c2850aed..c9834df2 100644
--- a/ftplugin/loginaccess.vim
+++ b/ftplugin/loginaccess.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/loginaccess.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/loginaccess.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/logindefs.vim b/ftplugin/logindefs.vim
index c917bfb6..97ba09fc 100644
--- a/ftplugin/logindefs.vim
+++ b/ftplugin/logindefs.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/logindefs.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/logindefs.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/logtalk.vim b/ftplugin/logtalk.vim
index 6310b4c4..b4b58d36 100644
--- a/ftplugin/logtalk.vim
+++ b/ftplugin/logtalk.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/logtalk.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/logtalk.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/lprolog.vim b/ftplugin/lprolog.vim
index edf3c23e..bdd1d5b1 100644
--- a/ftplugin/lprolog.vim
+++ b/ftplugin/lprolog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/lprolog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/lprolog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ls.vim b/ftplugin/ls.vim
index 87eee4ba..eb3cc517 100644
--- a/ftplugin/ls.vim
+++ b/ftplugin/ls.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ls.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ls.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/m4.vim b/ftplugin/m4.vim
index 12c53b2f..7ead0f44 100644
--- a/ftplugin/m4.vim
+++ b/ftplugin/m4.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/m4.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/m4.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mail.vim b/ftplugin/mail.vim
index 567bb6f0..0fd2e39d 100644
--- a/ftplugin/mail.vim
+++ b/ftplugin/mail.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mail.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mail.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mailaliases.vim b/ftplugin/mailaliases.vim
index 9ac29c76..ed8ed24c 100644
--- a/ftplugin/mailaliases.vim
+++ b/ftplugin/mailaliases.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mailaliases.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mailaliases.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mailcap.vim b/ftplugin/mailcap.vim
index 5da2d957..c3f7d665 100644
--- a/ftplugin/mailcap.vim
+++ b/ftplugin/mailcap.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mailcap.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mailcap.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/make.vim b/ftplugin/make.vim
index 635c8126..a077f521 100644
--- a/ftplugin/make.vim
+++ b/ftplugin/make.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/make.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/make.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mako.vim b/ftplugin/mako.vim
index a25fedf2..48cc40a1 100644
--- a/ftplugin/mako.vim
+++ b/ftplugin/mako.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mako.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mako.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/manconf.vim b/ftplugin/manconf.vim
index 255f4f32..34b0173b 100644
--- a/ftplugin/manconf.vim
+++ b/ftplugin/manconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/manconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/manconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index 2936ac00..4209f306 100644
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/markdown.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/markdown.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/meson.vim b/ftplugin/meson.vim
index eb3105b5..41daf3ee 100644
--- a/ftplugin/meson.vim
+++ b/ftplugin/meson.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/meson.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/meson.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mf.vim b/ftplugin/mf.vim
index 4f63dc03..395ebe46 100644
--- a/ftplugin/mf.vim
+++ b/ftplugin/mf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mma.vim b/ftplugin/mma.vim
index b22ce1c9..c173a1a2 100644
--- a/ftplugin/mma.vim
+++ b/ftplugin/mma.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mma.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mma.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/modconf.vim b/ftplugin/modconf.vim
index bf73a0cc..121cf3f8 100644
--- a/ftplugin/modconf.vim
+++ b/ftplugin/modconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/modconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/modconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/moon.vim b/ftplugin/moon.vim
index 09e9c7bc..997facd7 100644
--- a/ftplugin/moon.vim
+++ b/ftplugin/moon.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/moon.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/moon.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mp.vim b/ftplugin/mp.vim
index 2cf65bb1..18d539cb 100644
--- a/ftplugin/mp.vim
+++ b/ftplugin/mp.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mp.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mp.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mplayerconf.vim b/ftplugin/mplayerconf.vim
index a251ebf2..0a9a5b97 100644
--- a/ftplugin/mplayerconf.vim
+++ b/ftplugin/mplayerconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mplayerconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mplayerconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mrxvtrc.vim b/ftplugin/mrxvtrc.vim
index bfe04c1c..66ed311c 100644
--- a/ftplugin/mrxvtrc.vim
+++ b/ftplugin/mrxvtrc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mrxvtrc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mrxvtrc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/mustache.vim b/ftplugin/mustache.vim
index 349ec236..c6d4b22d 100644
--- a/ftplugin/mustache.vim
+++ b/ftplugin/mustache.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/mustache.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/mustache.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/muttrc.vim b/ftplugin/muttrc.vim
index ebe86806..6efb6fe2 100644
--- a/ftplugin/muttrc.vim
+++ b/ftplugin/muttrc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/muttrc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/muttrc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/nanorc.vim b/ftplugin/nanorc.vim
index 1363191c..d496dbe4 100644
--- a/ftplugin/nanorc.vim
+++ b/ftplugin/nanorc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/nanorc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/nanorc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/neomuttrc.vim b/ftplugin/neomuttrc.vim
index a63769cb..ef375cbd 100644
--- a/ftplugin/neomuttrc.vim
+++ b/ftplugin/neomuttrc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/neomuttrc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/neomuttrc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/netrc.vim b/ftplugin/netrc.vim
index 071362e4..8f3ab865 100644
--- a/ftplugin/netrc.vim
+++ b/ftplugin/netrc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/netrc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/netrc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/nginx.vim b/ftplugin/nginx.vim
index 13a50b2a..ac28682b 100644
--- a/ftplugin/nginx.vim
+++ b/ftplugin/nginx.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/nginx.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/nginx.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/nix.vim b/ftplugin/nix.vim
index 7863be6d..c54c8234 100644
--- a/ftplugin/nix.vim
+++ b/ftplugin/nix.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/nix.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/nix.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/nroff.vim b/ftplugin/nroff.vim
index 091fb018..2487c431 100644
--- a/ftplugin/nroff.vim
+++ b/ftplugin/nroff.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/nroff.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/nroff.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/nsis.vim b/ftplugin/nsis.vim
index edbe9192..eecf536f 100644
--- a/ftplugin/nsis.vim
+++ b/ftplugin/nsis.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/nsis.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/nsis.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/oasis.vim b/ftplugin/oasis.vim
index 0b2150d5..d8f3988c 100644
--- a/ftplugin/oasis.vim
+++ b/ftplugin/oasis.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/oasis.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/oasis.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/objc.vim b/ftplugin/objc.vim
index 909a1442..6f690a03 100644
--- a/ftplugin/objc.vim
+++ b/ftplugin/objc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/objc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/objc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ocaml.vim b/ftplugin/ocaml.vim
index 1c92e7d9..c3d952de 100644
--- a/ftplugin/ocaml.vim
+++ b/ftplugin/ocaml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ocaml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ocaml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ocamlbuild_tags.vim b/ftplugin/ocamlbuild_tags.vim
index 373ee28f..75167bf7 100644
--- a/ftplugin/ocamlbuild_tags.vim
+++ b/ftplugin/ocamlbuild_tags.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ocamlbuild_tags.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ocamlbuild_tags.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/occam.vim b/ftplugin/occam.vim
index e5bf6b85..4a6d6aa9 100644
--- a/ftplugin/occam.vim
+++ b/ftplugin/occam.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/occam.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/occam.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/omake.vim b/ftplugin/omake.vim
index c78d15d0..7b04a99a 100644
--- a/ftplugin/omake.vim
+++ b/ftplugin/omake.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/omake.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/omake.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/opencl.vim b/ftplugin/opencl.vim
index 39416e67..93132f10 100644
--- a/ftplugin/opencl.vim
+++ b/ftplugin/opencl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/opencl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/opencl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pamconf.vim b/ftplugin/pamconf.vim
index 7628224b..548c262a 100644
--- a/ftplugin/pamconf.vim
+++ b/ftplugin/pamconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pamconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pamconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pascal.vim b/ftplugin/pascal.vim
index f33a1946..828e8d1e 100644
--- a/ftplugin/pascal.vim
+++ b/ftplugin/pascal.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pascal.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pascal.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/passwd.vim b/ftplugin/passwd.vim
index 2e3ff220..3116758c 100644
--- a/ftplugin/passwd.vim
+++ b/ftplugin/passwd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/passwd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/passwd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pdf.vim b/ftplugin/pdf.vim
index d2acbeaf..97d77deb 100644
--- a/ftplugin/pdf.vim
+++ b/ftplugin/pdf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pdf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pdf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/perl.vim b/ftplugin/perl.vim
index e95319cc..5018676b 100644
--- a/ftplugin/perl.vim
+++ b/ftplugin/perl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/perl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/perl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pinfo.vim b/ftplugin/pinfo.vim
index d76a1fed..86746f32 100644
--- a/ftplugin/pinfo.vim
+++ b/ftplugin/pinfo.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pinfo.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pinfo.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/plantuml.vim b/ftplugin/plantuml.vim
index acfd5e03..1ab7da13 100644
--- a/ftplugin/plantuml.vim
+++ b/ftplugin/plantuml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/plantuml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/plantuml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pony.vim b/ftplugin/pony.vim
index bf1311f8..dee95d8e 100644
--- a/ftplugin/pony.vim
+++ b/ftplugin/pony.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pony.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pony.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/postscr.vim b/ftplugin/postscr.vim
index 5539b765..66631393 100644
--- a/ftplugin/postscr.vim
+++ b/ftplugin/postscr.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/postscr.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/postscr.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/procmail.vim b/ftplugin/procmail.vim
index 38126994..1c82967e 100644
--- a/ftplugin/procmail.vim
+++ b/ftplugin/procmail.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/procmail.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/procmail.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/prolog.vim b/ftplugin/prolog.vim
index 1b92ed90..a2a50602 100644
--- a/ftplugin/prolog.vim
+++ b/ftplugin/prolog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/prolog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/prolog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/protocols.vim b/ftplugin/protocols.vim
index fa268d39..d8cd8f65 100644
--- a/ftplugin/protocols.vim
+++ b/ftplugin/protocols.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/protocols.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/protocols.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ps1.vim b/ftplugin/ps1.vim
index 5d1622c8..b6d98258 100644
--- a/ftplugin/ps1.vim
+++ b/ftplugin/ps1.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ps1.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ps1.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ps1xml.vim b/ftplugin/ps1xml.vim
index a859e919..c9efc5ae 100644
--- a/ftplugin/ps1xml.vim
+++ b/ftplugin/ps1xml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ps1xml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ps1xml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pug.vim b/ftplugin/pug.vim
index 7b58b2ed..3237029c 100644
--- a/ftplugin/pug.vim
+++ b/ftplugin/pug.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pug.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pug.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/puppet.vim b/ftplugin/puppet.vim
index 0b9bd72d..42737508 100644
--- a/ftplugin/puppet.vim
+++ b/ftplugin/puppet.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/puppet.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/puppet.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/puppet_tagbar.vim b/ftplugin/puppet_tagbar.vim
index 68240b51..84751db1 100644
--- a/ftplugin/puppet_tagbar.vim
+++ b/ftplugin/puppet_tagbar.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/puppet_tagbar.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/puppet_tagbar.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/purescript.vim b/ftplugin/purescript.vim
index 96be330b..b53af764 100644
--- a/ftplugin/purescript.vim
+++ b/ftplugin/purescript.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/purescript.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/purescript.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/pyrex.vim b/ftplugin/pyrex.vim
index 02b10684..6e275e3a 100644
--- a/ftplugin/pyrex.vim
+++ b/ftplugin/pyrex.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/pyrex.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/pyrex.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/qml.vim b/ftplugin/qml.vim
index e61e983c..982b9ac7 100644
--- a/ftplugin/qml.vim
+++ b/ftplugin/qml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/qml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/qml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/quake.vim b/ftplugin/quake.vim
index 44e8f4f3..e3601fc8 100644
--- a/ftplugin/quake.vim
+++ b/ftplugin/quake.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/quake.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/quake.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/racket.vim b/ftplugin/racket.vim
index caf377cd..bc3d76c9 100644
--- a/ftplugin/racket.vim
+++ b/ftplugin/racket.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/racket.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/racket.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/raku.vim b/ftplugin/raku.vim
index c16c536e..a56385d1 100644
--- a/ftplugin/raku.vim
+++ b/ftplugin/raku.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/raku.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/raku.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/raml.vim b/ftplugin/raml.vim
index 7c83588e..ec1a3c4a 100644
--- a/ftplugin/raml.vim
+++ b/ftplugin/raml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/raml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/raml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/razor.vim b/ftplugin/razor.vim
index 8e6c86a5..8b229622 100644
--- a/ftplugin/razor.vim
+++ b/ftplugin/razor.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/razor.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/razor.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/readline.vim b/ftplugin/readline.vim
index afb4d3a8..ea38cd55 100644
--- a/ftplugin/readline.vim
+++ b/ftplugin/readline.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/readline.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/readline.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/reva.vim b/ftplugin/reva.vim
index 52665d59..d82461dc 100644
--- a/ftplugin/reva.vim
+++ b/ftplugin/reva.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/reva.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/reva.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rmd.vim b/ftplugin/rmd.vim
index e62efad6..b6a16c8c 100644
--- a/ftplugin/rmd.vim
+++ b/ftplugin/rmd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rmd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rmd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rnc.vim b/ftplugin/rnc.vim
index 0ede84a3..4873a22d 100644
--- a/ftplugin/rnc.vim
+++ b/ftplugin/rnc.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rnc.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rnc.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rnoweb.vim b/ftplugin/rnoweb.vim
index c04a9dc2..21efcbfe 100644
--- a/ftplugin/rnoweb.vim
+++ b/ftplugin/rnoweb.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rnoweb.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rnoweb.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rpl.vim b/ftplugin/rpl.vim
index 011bd945..af331849 100644
--- a/ftplugin/rpl.vim
+++ b/ftplugin/rpl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rpl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rpl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rrst.vim b/ftplugin/rrst.vim
index 95945a63..6c0d51d4 100644
--- a/ftplugin/rrst.vim
+++ b/ftplugin/rrst.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rrst.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rrst.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rst.vim b/ftplugin/rst.vim
index d1d71c29..791de7b9 100644
--- a/ftplugin/rst.vim
+++ b/ftplugin/rst.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rst.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rst.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/ruby.vim b/ftplugin/ruby.vim
index c20a08b2..5a7c6e7d 100644
--- a/ftplugin/ruby.vim
+++ b/ftplugin/ruby.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/ruby.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/ruby.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rust.vim b/ftplugin/rust.vim
index 408a9199..780baf39 100644
--- a/ftplugin/rust.vim
+++ b/ftplugin/rust.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rust.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rust.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/rust/tagbar.vim b/ftplugin/rust/tagbar.vim
index 875b766a..1301ca81 100644
--- a/ftplugin/rust/tagbar.vim
+++ b/ftplugin/rust/tagbar.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/rust/tagbar.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/rust/tagbar.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sass.vim b/ftplugin/sass.vim
index a5b66a83..3f4acf6e 100644
--- a/ftplugin/sass.vim
+++ b/ftplugin/sass.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sass.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sass.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sbt.vim b/ftplugin/sbt.vim
index 017f63ab..260360c7 100644
--- a/ftplugin/sbt.vim
+++ b/ftplugin/sbt.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sbt.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sbt.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/scala.vim b/ftplugin/scala.vim
index 0d569e10..c80daabb 100644
--- a/ftplugin/scala.vim
+++ b/ftplugin/scala.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/scala.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/scala.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/scala.xpt.vim b/ftplugin/scala.xpt.vim
index b49230a1..9df57081 100644
--- a/ftplugin/scala.xpt.vim
+++ b/ftplugin/scala.xpt.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/scala.xpt.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/scala.xpt.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/scala/tagbar.vim b/ftplugin/scala/tagbar.vim
index a60bf235..8236d737 100644
--- a/ftplugin/scala/tagbar.vim
+++ b/ftplugin/scala/tagbar.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/scala/tagbar.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/scala/tagbar.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/scheme.vim b/ftplugin/scheme.vim
index 6b791eec..68ad8c8b 100644
--- a/ftplugin/scheme.vim
+++ b/ftplugin/scheme.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/scheme.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/scheme.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/screen.vim b/ftplugin/screen.vim
index 83e5f7e3..2acc4b87 100644
--- a/ftplugin/screen.vim
+++ b/ftplugin/screen.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/screen.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/screen.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/scss.vim b/ftplugin/scss.vim
index 55db812a..abed20d5 100644
--- a/ftplugin/scss.vim
+++ b/ftplugin/scss.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/scss.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/scss.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sensors.vim b/ftplugin/sensors.vim
index cc91a810..dba05b65 100644
--- a/ftplugin/sensors.vim
+++ b/ftplugin/sensors.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sensors.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sensors.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/services.vim b/ftplugin/services.vim
index 2c0f414a..c4aaec81 100644
--- a/ftplugin/services.vim
+++ b/ftplugin/services.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/services.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/services.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/setserial.vim b/ftplugin/setserial.vim
index 50560bfe..4d588ae3 100644
--- a/ftplugin/setserial.vim
+++ b/ftplugin/setserial.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/setserial.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/setserial.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sexplib.vim b/ftplugin/sexplib.vim
index 8b4029e2..16af8a15 100644
--- a/ftplugin/sexplib.vim
+++ b/ftplugin/sexplib.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sexplib.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sexplib.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sieve.vim b/ftplugin/sieve.vim
index b5d36392..9f59d80f 100644
--- a/ftplugin/sieve.vim
+++ b/ftplugin/sieve.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sieve.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sieve.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/slim.vim b/ftplugin/slim.vim
index e15389d9..184b54d3 100644
--- a/ftplugin/slim.vim
+++ b/ftplugin/slim.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/slim.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/slim.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/slpconf.vim b/ftplugin/slpconf.vim
index 1140f20b..14fa5436 100644
--- a/ftplugin/slpconf.vim
+++ b/ftplugin/slpconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/slpconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/slpconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/slpreg.vim b/ftplugin/slpreg.vim
index ca09dfb5..e4b4580e 100644
--- a/ftplugin/slpreg.vim
+++ b/ftplugin/slpreg.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/slpreg.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/slpreg.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/slpspi.vim b/ftplugin/slpspi.vim
index ef4722c9..9a042d4f 100644
--- a/ftplugin/slpspi.vim
+++ b/ftplugin/slpspi.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/slpspi.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/slpspi.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/smt2.vim b/ftplugin/smt2.vim
index b39fe64d..86dfa720 100644
--- a/ftplugin/smt2.vim
+++ b/ftplugin/smt2.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/smt2.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/smt2.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/solidity.vim b/ftplugin/solidity.vim
index 853c53d2..43bfb3f4 100644
--- a/ftplugin/solidity.vim
+++ b/ftplugin/solidity.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/solidity.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/solidity.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/spec.vim b/ftplugin/spec.vim
index 900b0e49..772e218a 100644
--- a/ftplugin/spec.vim
+++ b/ftplugin/spec.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/spec.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/spec.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sql.vim b/ftplugin/sql.vim
index befd023b..bd49428a 100644
--- a/ftplugin/sql.vim
+++ b/ftplugin/sql.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sql.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sql.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sshconfig.vim b/ftplugin/sshconfig.vim
index 9519f30b..3c7c13fc 100644
--- a/ftplugin/sshconfig.vim
+++ b/ftplugin/sshconfig.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sshconfig.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sshconfig.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/stylus.vim b/ftplugin/stylus.vim
index c39decc3..b5c8aaee 100644
--- a/ftplugin/stylus.vim
+++ b/ftplugin/stylus.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/stylus.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/stylus.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sudoers.vim b/ftplugin/sudoers.vim
index 26ce5836..3a09305f 100644
--- a/ftplugin/sudoers.vim
+++ b/ftplugin/sudoers.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sudoers.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sudoers.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/svelte.vim b/ftplugin/svelte.vim
index d8bd58d5..a7037418 100644
--- a/ftplugin/svelte.vim
+++ b/ftplugin/svelte.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/svelte.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/svelte.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/swift.vim b/ftplugin/swift.vim
index d1e1de89..798a6b19 100644
--- a/ftplugin/swift.vim
+++ b/ftplugin/swift.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/swift.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/swift.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/swiftgyb.vim b/ftplugin/swiftgyb.vim
index 0870048b..87849112 100644
--- a/ftplugin/swiftgyb.vim
+++ b/ftplugin/swiftgyb.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/swiftgyb.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/swiftgyb.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/sysctl.vim b/ftplugin/sysctl.vim
index d8dca859..87e08de2 100644
--- a/ftplugin/sysctl.vim
+++ b/ftplugin/sysctl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/sysctl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/sysctl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/systemd.vim b/ftplugin/systemd.vim
index ee05ed2a..a4ff2eb1 100644
--- a/ftplugin/systemd.vim
+++ b/ftplugin/systemd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/systemd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/systemd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/systemverilog.vim b/ftplugin/systemverilog.vim
index 6b088c6c..4a322e03 100644
--- a/ftplugin/systemverilog.vim
+++ b/ftplugin/systemverilog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/systemverilog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/systemverilog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/tablegen.vim b/ftplugin/tablegen.vim
index 04b8c4e6..88516995 100644
--- a/ftplugin/tablegen.vim
+++ b/ftplugin/tablegen.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/tablegen.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/tablegen.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/tcl.vim b/ftplugin/tcl.vim
index c2dfd035..e1a6bf3e 100644
--- a/ftplugin/tcl.vim
+++ b/ftplugin/tcl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/tcl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/tcl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/terminfo.vim b/ftplugin/terminfo.vim
index ab948691..9150f8c9 100644
--- a/ftplugin/terminfo.vim
+++ b/ftplugin/terminfo.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/terminfo.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/terminfo.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/terraform.vim b/ftplugin/terraform.vim
index 8edc509d..2f6122c2 100644
--- a/ftplugin/terraform.vim
+++ b/ftplugin/terraform.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/terraform.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/terraform.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/tex.vim b/ftplugin/tex.vim
index b2ab4560..308b859a 100644
--- a/ftplugin/tex.vim
+++ b/ftplugin/tex.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/tex.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/tex.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/text.vim b/ftplugin/text.vim
index 7c13d82f..58f151a8 100644
--- a/ftplugin/text.vim
+++ b/ftplugin/text.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/text.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/text.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/textile.vim b/ftplugin/textile.vim
index d260e848..6799e23a 100644
--- a/ftplugin/textile.vim
+++ b/ftplugin/textile.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/textile.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/textile.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/tmux.vim b/ftplugin/tmux.vim
index 4965032b..53aafc80 100644
--- a/ftplugin/tmux.vim
+++ b/ftplugin/tmux.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/tmux.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/tmux.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/toml.vim b/ftplugin/toml.vim
index ce5a9fa1..9d489fbc 100644
--- a/ftplugin/toml.vim
+++ b/ftplugin/toml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/toml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/toml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/treetop.vim b/ftplugin/treetop.vim
index 628bd891..4069f641 100644
--- a/ftplugin/treetop.vim
+++ b/ftplugin/treetop.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/treetop.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/treetop.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/tt2html.vim b/ftplugin/tt2html.vim
index 6fb150fc..de8b6377 100644
--- a/ftplugin/tt2html.vim
+++ b/ftplugin/tt2html.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/tt2html.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/tt2html.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/twig.vim b/ftplugin/twig.vim
index ea10d3db..52b14150 100644
--- a/ftplugin/twig.vim
+++ b/ftplugin/twig.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/twig.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/twig.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/typescript.vim b/ftplugin/typescript.vim
index b99f5d9b..fa14101b 100644
--- a/ftplugin/typescript.vim
+++ b/ftplugin/typescript.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/typescript.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/typescript.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/typescriptreact.vim b/ftplugin/typescriptreact.vim
index a52ab70c..159f91b0 100644
--- a/ftplugin/typescriptreact.vim
+++ b/ftplugin/typescriptreact.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/typescriptreact.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/typescriptreact.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/udevconf.vim b/ftplugin/udevconf.vim
index e554c90b..ccfd7155 100644
--- a/ftplugin/udevconf.vim
+++ b/ftplugin/udevconf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/udevconf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/udevconf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/udevperm.vim b/ftplugin/udevperm.vim
index 7fde3445..47e41555 100644
--- a/ftplugin/udevperm.vim
+++ b/ftplugin/udevperm.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/udevperm.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/udevperm.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/updatedb.vim b/ftplugin/updatedb.vim
index 7dd6476f..f3bf376b 100644
--- a/ftplugin/updatedb.vim
+++ b/ftplugin/updatedb.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/updatedb.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/updatedb.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vala.vim b/ftplugin/vala.vim
index 88f9ea7c..7c4fcddc 100644
--- a/ftplugin/vala.vim
+++ b/ftplugin/vala.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vala.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vala.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vb.vim b/ftplugin/vb.vim
index f591072e..2989165c 100644
--- a/ftplugin/vb.vim
+++ b/ftplugin/vb.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vb.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vb.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/verilog.vim b/ftplugin/verilog.vim
index ff1109e5..ed2fd707 100644
--- a/ftplugin/verilog.vim
+++ b/ftplugin/verilog.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/verilog.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/verilog.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vhdl.vim b/ftplugin/vhdl.vim
index 31aded2b..81c6cadf 100644
--- a/ftplugin/vhdl.vim
+++ b/ftplugin/vhdl.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vhdl.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vhdl.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vlang.vim b/ftplugin/vlang.vim
index 8c597249..0a04d5ea 100644
--- a/ftplugin/vlang.vim
+++ b/ftplugin/vlang.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vlang.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vlang.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vroom.vim b/ftplugin/vroom.vim
index 835f1314..d13b5fe5 100644
--- a/ftplugin/vroom.vim
+++ b/ftplugin/vroom.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vroom.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vroom.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/vue.vim b/ftplugin/vue.vim
index e5bb5e43..36e5293c 100644
--- a/ftplugin/vue.vim
+++ b/ftplugin/vue.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/vue.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/vue.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/wast.vim b/ftplugin/wast.vim
index 7936da97..f6a103c7 100644
--- a/ftplugin/wast.vim
+++ b/ftplugin/wast.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/wast.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/wast.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xdefaults.vim b/ftplugin/xdefaults.vim
index 83fa9f91..9431ee40 100644
--- a/ftplugin/xdefaults.vim
+++ b/ftplugin/xdefaults.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xdefaults.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xdefaults.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xf86conf.vim b/ftplugin/xf86conf.vim
index 839dfaac..d44adb27 100644
--- a/ftplugin/xf86conf.vim
+++ b/ftplugin/xf86conf.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xf86conf.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xf86conf.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xhtml.vim b/ftplugin/xhtml.vim
index 68151ffb..48c5ee71 100644
--- a/ftplugin/xhtml.vim
+++ b/ftplugin/xhtml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xhtml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xhtml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xinetd.vim b/ftplugin/xinetd.vim
index 25af0607..f0e459d5 100644
--- a/ftplugin/xinetd.vim
+++ b/ftplugin/xinetd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xinetd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xinetd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xmodmap.vim b/ftplugin/xmodmap.vim
index e787380b..7a2216a2 100644
--- a/ftplugin/xmodmap.vim
+++ b/ftplugin/xmodmap.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xmodmap.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xmodmap.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xs.vim b/ftplugin/xs.vim
index 95d8a228..0ebb13da 100644
--- a/ftplugin/xs.vim
+++ b/ftplugin/xs.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xs.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xs.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xsd.vim b/ftplugin/xsd.vim
index f53f5bac..6b58eb29 100644
--- a/ftplugin/xsd.vim
+++ b/ftplugin/xsd.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xsd.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xsd.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/xslt.vim b/ftplugin/xslt.vim
index 76735f0a..b4109e57 100644
--- a/ftplugin/xslt.vim
+++ b/ftplugin/xslt.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/xslt.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/xslt.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/yaml.vim b/ftplugin/yaml.vim
index 44f716bf..5675a9e9 100644
--- a/ftplugin/yaml.vim
+++ b/ftplugin/yaml.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/yaml.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/yaml.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/zig.vim b/ftplugin/zig.vim
index 50f3aecd..79d177e2 100644
--- a/ftplugin/zig.vim
+++ b/ftplugin/zig.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/zig.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/zig.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish
diff --git a/ftplugin/zimbu.vim b/ftplugin/zimbu.vim
index 6af9be4f..d6299685 100644
--- a/ftplugin/zimbu.vim
+++ b/ftplugin/zimbu.vim
@@ -1,4 +1,6 @@
-let files = filter(globpath(&rtp, 'ftplugin/zimbu.vim', 1, 1), { _, v -> v !~ "vim-polyglot" && v !~ $VIMRUNTIME && v !~ "after" })
+let s:base = expand("<sfile>:h:h")
+let Filter = { _, v -> stridx(v, s:base) == -1 && stridx(v, $VIMRUNTIME) == -1 && v !~ "after" }
+let files = filter(globpath(&rtp, 'ftplugin/zimbu.vim', 1, 1), Filter)
 if len(files) > 0
   exec 'source ' . files[0]
   finish