runtime(vim): add simple vimscript complete function
Commit:
https://github.com/vim/vim/commit/fa2bcbdebc7dc88d73ab36941a63bb146904a9e0
Author: Maxim Kim <haba...@gmail.com>
Date: Fri Aug 8 13:42:49 2025 +0200
runtime(vim): add simple vimscript complete function
closes: https://github.com/vim/vim/issues/17871
Signed-off-by: Maxim Kim <haba...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>
diff --git a/runtime/autoload/vimcomplete.vim b/runtime/autoload/vimcomplete.vim
new file mode 100644
index 000000000..81fdf0f7c
--- /dev/null
+++ b/runtime/autoload/vimcomplete.vim
@@ -0,0 +1,83 @@
+vim9script
+
+# Vim completion script
+# Language: Vimscript
+# Maintainer: Maxim Kim <haba...@gmail.com>
+# Last Change: 2025-07-28
+#
+# Usage:
+# setlocal omnifunc=vimcomplete#Complete
+#
+# Simple complete function for the Vimscript
+
+var trigger: string = ""
+var prefix: string = ""
+
+
+def GetTrigger(line: string): list<any>
+ var result = ""
+ var result_len = 0
+
+ if line =~ '->\k*$'
+ result = 'function'
+ elseif line =~ ' %(^|\s+)\&\k*$'
+ result = 'option'
+ elseif line =~ '[\[(]\s*$'
+ result = 'expression'
+ elseif line =~ '[lvgsb]:\k*$'
+ result = 'var'
+ result_len = 2
+ else
+ result = getcompletiontype(line) ?? 'cmdline'
+ endif
+ return [result, result_len]
+enddef
+
+export def Complete(findstart: number, base: string): any
+ if findstart > 0
+ var line = getline('.')->strpart(0, col('.') - 1)
+ var keyword = line->matchstr('\k\+$')
+ var stx = synstack(line('.'), col('.') - 1)->map('synIDattr(v:val,
"name")')->join()
+ if stx =~? 'Comment' || (stx =~ 'String' && stx !~
'vimStringInterpolationExpr')
+ return -2
+ endif
+ var trigger_len: number = 0
+ [trigger, trigger_len] = GetTrigger(line)
+ if keyword->empty() && trigger->empty()
+ return -2
+ endif
+ prefix = line
+ return line->len() - keyword->len() - trigger_len
+ endif
+
+ var items = []
+ if trigger == 'function'
+ items = getcompletion(base, 'function')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Function', dup:
0}))
+ elseif trigger == 'option'
+ items = getcompletion(base, 'option')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Option', dup: 0}))
+ elseif trigger == 'var'
+ items = getcompletion(base, 'var')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Variable', dup:
0}))
+ elseif trigger == 'expression'
+ items = getcompletion(base, 'expression')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Expression', dup:
0}))
+ elseif trigger == 'command'
+ var commands = getcompletion(base, 'command')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Command', dup: 0}))
+ var functions = getcompletion(base, 'function')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Function', dup:
0}))
+ items = commands + functions
+ else
+ items = getcompletion(prefix, 'cmdline')
+ ->mapnew((_, v) => ({word: v->matchstr('\k\+'), kind: 'v', dup:
0}))
+
+ if empty(items) && !empty(base)
+ items = getcompletion(base, 'expression')
+ ->mapnew((_, v) => ({word: v, kind: 'v', menu: 'Expression',
dup: 0}))
+ endif
+ endif
+
+ return items->empty() ? v:none : items
+enddef
diff --git a/runtime/ftplugin/vim.vim b/runtime/ftplugin/vim.vim
index 28ca9b326..5ee3812b4 100644
--- a/runtime/ftplugin/vim.vim
+++ b/runtime/ftplugin/vim.vim
@@ -8,6 +8,7 @@
" @lacygoill
" Last Change: 2025 Mar 05
" 2025 Aug 06 by Vim Project (add gf maps #17881)
+" 2025 Aug 08 by Vim Project (add vimscript complete function #17871)
" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
@@ -22,7 +23,7 @@ set cpo&vim
if !exists('*VimFtpluginUndo')
func VimFtpluginUndo()
- setl fo< isk< com< tw< commentstring< include< define< keywordprg<
+ setl fo< isk< com< tw< commentstring< include< define< keywordprg<
omnifunc<
sil! delc -buffer VimKeywordPrg
if exists('b:did_add_maps')
silent! nunmap <buffer> [[
@@ -121,6 +122,11 @@ setlocal include=\v^\s*import\s*(autoload)?
" set 'define' to recognize export commands
setlocal define=\v^\s*export\s*(def\|const\|var\|final)
+if has("vim9script")
+ " set omnifunc completion
+ setlocal omnifunc=vimcomplete#Complete
+endif
+
" Format comments to be up to 78 characters long
if &tw == 0
setlocal tw=78
--
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