https://bugs.exim.org/show_bug.cgi?id=2527
Bug ID: 2527
Summary: Incomplete unicode handling in pcre2_substitute when
converting to upper/lower case
Product: PCRE
Version: 10.34 (PCRE2)
Hardware: All
OS: All
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: p...@hermes.cam.ac.uk
Reporter: kkil...@gmail.com
CC: pcre-dev@exim.org
According to Philip it should be possible to not set PCRE2_UTF but set
PCRE2_UCP. In this case the desired behaviour should be that Unicode char
properties are considered although surrogates may not be handled correctly and
invalid unicode may be present.
This does not work in pcre2_substitute where explicitely
if (utf)
is asked when doing the conversion from upper/lower. I would suggest to ask for
PCRE2_UCP or just completely disable the "if" in the unicode case.
We just removed "if". This makes pcre2_substitute work like classical UCS-2
upper/lower case conversion.
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