2 testcases attached
Created attachment 15828 [details]
testcase by bdash
Created attachment 15830 [details]
Issue is also present in Safari 2.0.4 (419.3)
The issue is probably narrower in scope than the title suggests. In this specific example the character class [\s\S] should match any single character (\s is the set of all whitespace characters, \S is the set of non-whitespace characters). For some reason this is not correctly matching LEFTWARDS ARROW.
It would be interesting to know whether other character classes exhibit this issue, and whether other Unicode characters do too.
Created attachment 15833 [details]
Improved test case
See also: bug 10370 (duplicate?).
*** This bug has been marked as a duplicate of 10370 ***