runtime(doc): clarify the behaviour of 'fo-m'

fixes: #19095

Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/change.txt b/runtime/doc/change.txt
index 172bf494a60fbf4ba05f6eff27c4a6fce0c22595..9096b2e312bb2b30d17658ac1fb08ef6f47c80b5 100644 (file)
--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt*   For Vim version 9.1.  Last change: 2025 Dec 18
+*change.txt*   For Vim version 9.1.  Last change: 2026 Jan 08
 
 
                  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1777,7 +1777,9 @@ l Long lines are not broken in insert mode: When a line was longer than
        automatically format it.
                                                        *fo-m*
 m      Also break at a multibyte character above 255.  This is useful for
-       Asian text where every character is a word on its own.
+       Asian text where every character is a word on its own.  Note that
+       line breaks may also be added after punctuation characters such as
+       colons to match the CJK linebreaking rules.
                                                        *fo-M*
 M      When joining lines, don't insert a space before or after a multibyte
        character.  Overrules the 'B' flag.