1 files changed, 76 insertions, 0 deletions
diff --git a/runtime/indent/haml.vim b/runtime/indent/haml.vim
new file mode 100644
index 0000000..acd99d9
--- /dev/null
+++ b/runtime/indent/haml.vim
@@ -0,0 +1,76 @@
+" Vim indent file
+" Language:	Haml
+" Maintainer:	Tim Pope <vimNOSPAM@tpope.org>
+" Last Change:	2022 Mar 15
+
+if exists("b:did_indent")
+  finish
+endif
+runtime! indent/ruby.vim
+unlet! b:did_indent
+let b:did_indent = 1
+
+setlocal autoindent
+setlocal indentexpr=GetHamlIndent()
+setlocal indentkeys=o,O,*<Return>,},],0),!^F,=end,=else,=elsif,=rescue,=ensure,=when
+
+let b:undo_indent = "setl ai< inde< indk<"
+
+" Only define the function once.
+if exists("*GetHamlIndent")
+  finish
+endif
+
+let s:attributes = '\%({.\{-\}}\|\[.\{-\}\]\)'
+let s:tag = '\%([%.#][[:alnum:]_-]\+\|'.s:attributes.'\)*[<>]*'
+
+if !exists('g:haml_self_closing_tags')
+  let g:haml_self_closing_tags = 'base|link|meta|br|hr|img|input'
+endif
+
+function! GetHamlIndent()
+  let lnum = prevnonblank(v:lnum-1)
+  if lnum == 0
+    return 0
+  endif
+  let line = substitute(getline(lnum),'\s\+$','','')
+  let cline = substitute(substitute(getline(v:lnum),'\s\+$','',''),'^\s\+','','')
+  let lastcol = strlen(line)
+  let line = substitute(line,'^\s\+','','')
+  let indent = indent(lnum)
+  let cindent = indent(v:lnum)
+  let sw = shiftwidth()
+  if cline =~# '\v^-\s*%(elsif|else|when)>'
+    let indent = cindent < indent ? cindent : indent - sw
+  endif
+  let increase = indent + sw
+  if indent == indent(lnum)
+    let indent = cindent <= indent ? -1 : increase
+  endif
+
+  let group = synIDattr(synID(lnum,lastcol,1),'name')
+
+  if line =~ '^!!!'
+    return indent
+  elseif line =~ '^/\%(\[[^]]*\]\)\=$'
+    return increase
+  elseif group == 'hamlFilter'
+    return increase
+  elseif line =~ '^'.s:tag.'[&!]\=[=~-]\s*\%(\%(if\|else\|elsif\|unless\|case\|when\|while\|until\|for\|begin\|module\|class\|def\)\>\%(.*\<end\>\)\@!\|.*do\%(\s*|[^|]*|\)\=\s*$\)'
+    return increase
+  elseif line =~ '^'.s:tag.'[&!]\=[=~-].*,\s*$'
+    return increase
+  elseif line == '-#'
+    return increase
+  elseif group =~? '\v^(hamlSelfCloser)$' || line =~? '^%\v%('.g:haml_self_closing_tags.')>'
+    return indent
+  elseif group =~? '\v^%(hamlTag|hamlAttributesDelimiter|hamlObjectDelimiter|hamlClass|hamlId|htmlTagName|htmlSpecialTagName)$'
+    return increase
+  elseif synIDattr(synID(v:lnum,1,1),'name') ==? 'hamlRubyFilter'
+    return GetRubyIndent()
+  else
+    return indent
+  endif
+endfunction
+
+" vim:set sw=2: