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runtime(help): Update syntax, add vim9 example language

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"vim9" is Vim9 script and "vim" is legacy script.

See: https://github.com/vim/vim/pull/18350#discussion_r2372462539

closes: #18407

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Doug Kearns
2025-09-28 18:06:04 +00:00
committed by Christian Brabandt
parent ae20d732ae
commit 3a56139398
6 changed files with 24 additions and 9 deletions
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13
runtime/syntax/help.vim
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@ -1,7 +1,7 @@
" Vim syntax file
" Language: Vim help file
" Maintainer: Doug Kearns <dougkearns@gmail.com>
" Last Change: 2025 Jul 20
" Last Change: 2025 Sep 27
" Former Maintainer: Bram Moolenaar <Bram@vim.org>
" Quit when a (custom) syntax file was already loaded
@ -15,7 +15,7 @@ set cpo&vim
syn iskeyword @,48-57,_,192-255
if !exists('g:help_example_languages')
let g:help_example_languages = #{ vim: 'vim' }
let g:help_example_languages = #{ vim: 'vim', vim9: 'vim' }
endif
syn match helpHeadline "^[A-Z.][-A-Z0-9 .,()_']*?\=\ze\(\s\+\*\|$\)"
@ -32,10 +32,19 @@ endif
for [s:lang, s:syntax] in g:help_example_languages->items()
unlet! b:current_syntax
if s:lang == "vim9"
let b:vimsyn_force_vim9 = v:true
endif
" silent! to prevent E403
execute 'silent! syn include' $'@helpExampleHighlight_{s:lang}'
\ $'syntax/{s:syntax}.vim'
if s:lang == "vim9"
unlet b:vimsyn_force_vim9
endif
execute $'syn region helpExampleHighlight_{s:lang} matchgroup=helpIgnore'
\ $'start=/\%(^\| \)>{s:lang}$/'
\ 'end=/^[^ \t]/me=e-1 end=/^</'