1 files changed, 66 insertions, 0 deletions
diff --git a/runtime/indent/liquid.vim b/runtime/indent/liquid.vim
new file mode 100644
index 0000000..6fc9337
--- /dev/null
+++ b/runtime/indent/liquid.vim
@@ -0,0 +1,66 @@
+" Vim indent file
+" Language:     Liquid
+" Maintainer:   Tim Pope <vimNOSPAM@tpope.org>
+" Last Change:	2022 Mar 15
+
+if exists('b:did_indent')
+  finish
+endif
+
+set indentexpr=
+if exists('b:liquid_subtype')
+  exe 'runtime! indent/'.b:liquid_subtype.'.vim'
+else
+  runtime! indent/html.vim
+endif
+unlet! b:did_indent
+
+if &l:indentexpr == ''
+  if &l:cindent
+    let &l:indentexpr = 'cindent(v:lnum)'
+  else
+    let &l:indentexpr = 'indent(prevnonblank(v:lnum-1))'
+  endif
+endif
+let b:liquid_subtype_indentexpr = &l:indentexpr
+
+let b:did_indent = 1
+
+setlocal indentexpr=GetLiquidIndent()
+setlocal indentkeys=o,O,*<Return>,<>>,{,},0),0],o,O,!^F,=end,=endif,=endunless,=endifchanged,=endcase,=endfor,=endtablerow,=endcapture,=else,=elsif,=when,=empty
+
+let b:undo_indent = "setl inde< indk<"
+
+" Only define the function once.
+if exists('*GetLiquidIndent')
+  finish
+endif
+
+function! s:count(string, pattern) abort
+  let string = substitute(a:string,'\C'.a:pattern,"\n",'g')
+  return strlen(substitute(string,"[^\n]",'','g'))
+endfunction
+
+function! GetLiquidIndent(...) abort
+  if a:0 && a:1 == '.'
+    let v:lnum = line('.')
+  elseif a:0 && a:1 =~ '^\d'
+    let v:lnum = a:1
+  endif
+  let vcol = col('.')
+  call cursor(v:lnum,1)
+  exe "let ind = ".b:liquid_subtype_indentexpr
+  let lnum = prevnonblank(v:lnum-1)
+  let line = getline(lnum)
+  let cline = getline(v:lnum)
+  let line  = substitute(line,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+','','')
+  let line  = substitute(line,'\C\%(\s*{%-\=\s*if.\+-\=%}.\+{%-\=\s*endif\s*-\=%}\)\+','','g')
+  let line .= matchstr(cline,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+')
+  let cline = substitute(cline,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+','','')
+  let sw = shiftwidth()
+  let ind += sw * s:count(line,'{%-\=\s*\%(if\|elsif\|else\|unless\|ifchanged\|case\|when\|for\|empty\|tablerow\|capture\)\>')
+  let ind -= sw * s:count(line,'{%-\=\s*end\%(if\|unless\|ifchanged\|case\|for\|tablerow\|capture\)\>')
+  let ind -= sw * s:count(cline,'{%-\=\s*\%(elsif\|else\|when\|empty\)\>')
+  let ind -= sw * s:count(cline,'{%-\=\s*end\w*$')
+  return ind
+endfunction