3 files changed, 73 insertions, 1 deletions
diff --git a/indent/bicep.vim b/indent/bicep.vim
new file mode 100644
index 00000000..08c8cd6b
--- /dev/null
+++ b/indent/bicep.vim
@@ -0,0 +1,68 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'bicep', 'indent/bicep.vim')
+  finish
+endif
+
+" Only load this file if no other indent file was loaded
+if exists('b:did_indent')
+  finish
+endif
+let b:did_indent = 1
+
+let s:cpo_save = &cpoptions
+set cpoptions&vim
+
+setlocal nolisp
+setlocal autoindent shiftwidth=2 tabstop=2 softtabstop=2 expandtab
+setlocal indentexpr=BicepIndent(v:lnum)
+setlocal indentkeys+=<:>,0=},0=),0=*/
+let b:undo_indent = 'setlocal lisp< autoindent< shiftwidth< tabstop< softtabstop<'
+  \ . ' expandtab< indentexpr< indentkeys<'
+
+let &cpoptions = s:cpo_save
+unlet s:cpo_save
+
+if exists('*BicepIndent')
+  finish
+endif
+
+let s:cpo_save = &cpoptions
+set cpoptions&vim
+
+function! BicepIndent(lnum)
+  " Beginning of the file should have no indent
+  if a:lnum == 0
+    return 0
+  endif
+
+  " Usual case is to continue at the same indent as the previous non-blank line.
+  let prevlnum = prevnonblank(a:lnum-1)
+  let thisindent = indent(prevlnum)
+
+  " If that previous line is a non-comment ending in [ { (, increase the
+  " indent level.
+  let prevline = getline(prevlnum)
+  if prevline !~# '^\s*//' && prevline =~# '[\[{\(]\s*$'
+    let thisindent += &shiftwidth
+  endif
+
+  " If the current line ends a block, decrease the indent level.
+  let thisline = getline(a:lnum)
+  if thisline =~# '^\s*[\)}\]]'
+    let thisindent -= &shiftwidth
+  endif
+
+  " If the previous line starts a block comment /*, increase by one
+  if prevline =~# '/\*'
+    let thisindent += 2
+  endif
+
+  " If the this line ends a block comment */, decrease by one
+  if thisline =~# '\*/'
+    let thisindent -= 2
+  endif
+
+  return thisindent
+endfunction
+
+let &cpoptions = s:cpo_save
+unlet s:cpo_save
diff --git a/indent/rst.vim b/indent/rst.vim
index f27c5ecb..66920d83 100644
--- a/indent/rst.vim
+++ b/indent/rst.vim
@@ -18,6 +18,8 @@ setlocal indentexpr=GetRSTIndent()
 setlocal indentkeys=!^F,o,O
 setlocal nosmartindent
 
+let b:undo_indent = "setlocal indentexpr< indentkeys< smartindent<"
+
 if exists("*GetRSTIndent")
   finish
 endif
diff --git a/indent/ruby.vim b/indent/ruby.vim
index 0a7cfae6..e08a38cf 100644
--- a/indent/ruby.vim
+++ b/indent/ruby.vim
@@ -43,9 +43,11 @@ setlocal nosmartindent
 " Now, set up our indentation expression and keys that trigger it.
 setlocal indentexpr=GetRubyIndent(v:lnum)
 setlocal indentkeys=0{,0},0),0],!^F,o,O,e,:,.
-setlocal indentkeys+==end,=else,=elsif,=when,=in,=ensure,=rescue,==begin,==end
+setlocal indentkeys+==end,=else,=elsif,=when,=in\ ,=ensure,=rescue,==begin,==end
 setlocal indentkeys+==private,=protected,=public
 
+let b:undo_indent = "setlocal indentexpr< indentkeys< smartindent<"
+
 " Only define the function once.
 if exists("*GetRubyIndent")
   finish