Commit: runtime(jjdescription): allow to configure summary width

[Christian Brabandt]

runtime(jjdescription): allow to configure summary width

Commit: https://github.com/vim/vim/commit/86ae6858ababe1f80476368c617dc1812df5b781
Author: Emilia <emi...@bewitching.dev>
Date: Sat Apr 11 15:34:53 2026 +0000

runtime(jjdescription): allow to configure summary width

Allow to configure max length for the summary line and fall back to gits
setting.

closes: #19905

Signed-off-by: Emilia <emi...@bewitching.dev>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/doc/filetype.txt b/runtime/doc/filetype.txt
index 790cfc2bd..461f801cc 100644
--- a/runtime/doc/filetype.txt
+++ b/runtime/doc/filetype.txt
@@ -1,4 +1,4 @@
-*filetype.txt* For Vim version 9.2. Last change: 2026 Apr 09
+*filetype.txt* For Vim version 9.2. Last change: 2026 Apr 11


VIM REFERENCE MANUAL by Bram Moolenaar
@@ -806,6 +806,14 @@ To enable the recognition of Markdown comments each time after removing
re-source "javaformat.vim" for Vim versions greater than `8.2.1397`: >
runtime autoload/javaformat.vim
<
+JUJUTSU DESCRIPTION *ft-jjdescription-plugin*
+
+The length of the first line of the commit message used for syntax
+highlighting can be configured via `g:jjcommit_summary_length`, and will
+fallback to `g:gitcommit_summary_length`. The default is 50. Example: >
+
+ let g:jjcommit_summary_length = 70
+<
JSON-FORMAT *ft-json-plugin*

JSON filetype can be extended to use 'formatexpr' and "json.FormatExpr()"
@@ -816,7 +824,7 @@ Add following lines to $HOME/.vim/ftplugin/json.vim: >
vim9script
import autoload 'dist/json.vim'
setl formatexpr=json.FormatExpr()
-
+<
LUA *ft-lua-plugin* *g:lua_folding*

You can enable folding of Lua functions using |fold-expr| by: >
diff --git a/runtime/doc/tags b/runtime/doc/tags
index 66f373161..1e0720b21 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -7601,6 +7601,7 @@ ft-inform-syntax syntax.txt /*ft-inform-syntax*
ft-java-plugin filetype.txt /*ft-java-plugin*
ft-java-syntax syntax.txt /*ft-java-syntax*
ft-javascript-omni insert.txt /*ft-javascript-omni*
+ft-jjdescription-plugin filetype.txt /*ft-jjdescription-plugin*
ft-jq-syntax syntax.txt /*ft-jq-syntax*
ft-json-plugin filetype.txt /*ft-json-plugin*
ft-json-syntax syntax.txt /*ft-json-syntax*
diff --git a/runtime/syntax/jjdescription.vim b/runtime/syntax/jjdescription.vim
index f7b76ba26..dcdcb3991 100644
--- a/runtime/syntax/jjdescription.vim
+++ b/runtime/syntax/jjdescription.vim
@@ -5,6 +5,7 @@
" 2025 Apr 17 by Vim Project (don't require space to start comments, #17130)
" 2026 Apr 09 by Vim Project (anchor status regex to beginning of line, #19879)
" 2026 Apr 09 by Vim Project (detect renames of files, #19879)
+" 2026 Apr 11 by Vim Project (configure summary length, #19905)

if exists('b:current_syntax')
finish
@@ -20,10 +21,21 @@ syn region jjComment start="^JJ:" end="$" contains=jjAdded,jjRemoved,jjChanged,j
syn include @jjCommitDiff syntax/diff.vim
syn region jjCommitDiff start=/\%(^diff --\%(git\|cc\|combined\) \)\@=/ end=/^\%(diff --\|$\|@@\@!\|[^[:alnum:]\ +-]\S\@!\)\@=/ fold contains=@jjCommitDiff

-hi def link jjComment Comment
-hi def link jjAdded Added
-hi def link jjRemoved Removed
-hi def link jjChanged Changed
-hi def link jjRenamed Changed
+if get(g:, 'jjcommit_summary_length', get(g:, 'gitcommit_summary_length', 0)) < 0
+ syn match jjdescriptionSummary "^.*$" contained containedin=jjcommitFirstLine nextgroup=jjcommitOverflow contains=@Spell
+elseif get(g:, 'jjcommit_summary_length', get(g:, 'gitcommit_summary_length', 1)) > 0
+ exe 'syn match jjdescriptionSummary "^.*\%<' . (get(g:, 'jjcommit_summary_length', get(:g, 'gitcommit_summary_length', 50) + 1) . 'v." contained containedin=jjcommitFirstLine nextgroup=jjcommitOverflow contains=@Spell'
+endif
+syn match jjcommitOverflow ".*" contained contains=@Spell
+syn match jjcommitBlank "^.\+" contained contains=@Spell
+syn match jjcommitFirstLine "\%^.*" nextgroup=jjcommitBlank,jjComment skipnl
+
+hi def link jjcommitSummary Keyword
+hi def link jjComment Comment
+hi def link jjAdded Added
+hi def link jjRemove Removed
+hi def link jjChange Changed
+hi def link jjRenamed Changed
+hi def link jjcommitBlank Error

let b:current_syntax = 'jjdescription'