1 files changed, 22 insertions, 0 deletions
diff --git a/ftplugin/diff.vim b/ftplugin/diff.vim
new file mode 100644
index 00000000..8b7d0551
--- /dev/null
+++ b/ftplugin/diff.vim
@@ -0,0 +1,22 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'diff') == -1
+
+" Vim filetype plugin file
+" Language:	Diff
+" Maintainer:	Bram Moolenaar <Bram@vim.org>
+" Last Change:	2020 Jul 18
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl modeline<"
+
+" Don't use modelines in a diff, they apply to the diffed file
+setlocal nomodeline
+
+" If there are comments they start with #
+let &commentstring = "# %s"
+
+endif