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 29ed1c7..edc425a 100644
--- 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 @@
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.