runtime(doc): mention 'iskeyword' at :h charclass()

fixes: #15965

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

diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 29ed1c79a1933fad1b335a40e0d2c96c984eef5d..edc425a5aba5137fd644a48a0c32411a9ade1ea3 100644 (file)
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*  For Vim version 9.1.  Last change: 2024 Oct 31
+*builtin.txt*  For Vim version 9.1.  Last change: 2024 Nov 01
 
 
                  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1625,7 +1625,7 @@ charclass({string})                                       *charclass()*
                The character class is one of:
                        0       blank
                        1       punctuation
-                       2       word character
+                       2       word character (depends on 'iskeyword')
                        3       emoji
                        other   specific Unicode class
                The class is used in patterns and word motions.