runtime(doc): document that the diff filetype uses Diff hl groups
related: #13776
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 040780b..bc833b1 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt* For Vim version 9.1. Last change: 2023 Dec 27
+*syntax.txt* For Vim version 9.1. Last change: 2024 Jan 03
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1261,7 +1261,7 @@
g:desktop_enable_kde follows g:desktop_enable_nonstd if not supplied
-DIFF *diff.vim*
+DIFF *diff.vim* *ft-diff-syntax*
The diff highlighting normally finds translated headers. This can be slow if
there are very long lines in the file. To disable translations: >
@@ -1270,7 +1270,15 @@
Also see |diff-slow|.
+Since the Vim 9.1 release |version-9.1| the diff filetype links the diffAdded,
+diffRemoved and diffChanged highlighting groups to |hl-DiffAdd|,
+|hl-DiffDelete| and |hl-DiffChange| by default. If you do not want this, you
+can change it to the previous groups like this in your |.vimrc| >
+ hi link diffRemoved Special
+ hi link diffChanged PreProc
+ hi link diffAdded Identifier
+<
DIRCOLORS *dircolors.vim* *ft-dircolors-syntax*
The dircolors utility highlighting definition has one option. It exists to