https://bugs.exim.org/show_bug.cgi?id=2520
--- Comment #1 from Kilian <kkilger@???> ---
Of course, there is a small "uncertainty" if also "PCRE2_SUBSTITUTE_GLOBAL" is
set. I would favour to disallow the combination of the flags
PCRE2_SUBSITUTE_GLOBAL
and
PCRE2_SUBSTITUTE_MATCHED
because it makes very weird behaviour.
If an error occurs after the second match, the user supplied match_data is
invalidated by the inner match. So if the user tries to "reinvoke"
pcre2_substitute, this won't work.
This is a strong option for providing a second function. If you would share
your code on github, we could change it, create the new function and also
adjust the documentation :-).
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