1 files changed, 98 insertions, 0 deletions
diff --git a/runtime/indent/cucumber.vim b/runtime/indent/cucumber.vim
new file mode 100644
index 0000000..5d144e4
--- /dev/null
+++ b/runtime/indent/cucumber.vim
@@ -0,0 +1,98 @@
+" Vim indent file
+" Language:	Cucumber
+" Maintainer:	Tim Pope <vimNOSPAM@tpope.org>
+" Last Change:	2023 Dec 28
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal autoindent
+setlocal indentexpr=GetCucumberIndent()
+setlocal indentkeys=o,O,*<Return>,<:>,0<Bar>,0#,=,!^F
+
+let b:undo_indent = 'setl ai< inde< indk<'
+
+" Only define the function once.
+if exists("*GetCucumberIndent")
+  finish
+endif
+
+let s:headings = {
+      \ 'Feature': 'feature',
+      \ 'Rule': 'rule',
+      \ 'Background': 'bg_or_scenario',
+      \ 'Scenario': 'bg_or_scenario',
+      \ 'ScenarioOutline': 'bg_or_scenario',
+      \ 'Examples': 'examples',
+      \ 'Scenarios': 'examples'}
+
+function! s:Line(lnum) abort
+  if getline(a:lnum) =~# ':'
+    let group = matchstr(synIDattr(synID(a:lnum,1+indent(a:lnum), 1), 'name'), '^cucumber\zs.*')
+    if !has_key(s:headings, group)
+      let group = substitute(matchstr(getline(a:lnum), '^\s*\zs\%([^:]\+\)\ze:\S\@!'), '\s\+', '', 'g')
+    endif
+  else
+    let group = ''
+  endif
+  let char = matchstr(getline(a:lnum), '^\s*\zs[[:punct:]]')
+  return {
+        \ 'lnum': a:lnum,
+        \ 'indent': indent(a:lnum),
+        \ 'heading': get(s:headings, group, ''),
+        \ 'tag': char ==# '@',
+        \ 'table': char ==# '|',
+        \ 'comment': char ==# '#',
+        \ }
+endfunction
+
+function! GetCucumberIndent(...) abort
+  let lnum = a:0 ? a:1 : v:lnum
+  let sw = shiftwidth()
+  let prev = s:Line(prevnonblank(lnum-1))
+  let curr = s:Line(lnum)
+  let next = s:Line(nextnonblank(lnum+1))
+  if curr.heading ==# 'feature'
+    " feature heading
+    return 0
+  elseif curr.heading ==# 'examples'
+    " examples heading
+    return 2 * sw
+  elseif curr.heading ==# 'bg_or_scenario'
+    " background, scenario or outline heading
+    return sw
+  elseif prev.heading ==# 'feature'
+    " line after feature heading
+    return sw
+  elseif prev.heading ==# 'examples'
+    " line after examples heading
+    return 3 * sw
+  elseif prev.heading ==# 'bg_or_scenario'
+    " line after background, scenario or outline heading
+    return 2 * sw
+  elseif (curr.tag || curr.comment) && (next.heading ==# 'feature' || prev.indent <= 0)
+    " tag or comment before a feature heading
+    return 0
+  elseif curr.tag
+    " other tags
+    return sw
+  elseif (curr.table || curr.comment) && prev.table
+    " mid-table
+    " preserve indent
+    return prev.indent
+  elseif curr.table && !prev.table
+    " first line of a table, relative indent
+    return prev.indent + sw
+  elseif !curr.table && prev.table
+    " line after a table, relative unindent
+    return prev.indent - sw
+  elseif curr.comment && getline(v:lnum-1) =~# '^\s*$' && next.heading ==# 'bg_or_scenario'
+    " comments on scenarios
+    return sw
+  endif
+  return prev.indent < 0 ? 0 : prev.indent
+endfunction
+
+" vim:set sts=2 sw=2: