https://bugs.exim.org/show_bug.cgi?id=2725
onlinecop@??? changed:
What |Removed |Added
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CC| |onlinecop@???
--- Comment #1 from onlinecop@??? ---
When /(*SKIP)(*F)/ is used outside of a (?(DEFINE)...) group, the bumpalong
moves to the location where (*SKIP) was encountered. Given the pattern:
/(?<Value>"[^"]*":(*SKIP)(*F)|"[^"]*")/g
on the literal text:
"key": { "k1":"v1", "k2":"v2" }
(or on the escaped text):
"\"key\": { \"k1\":\"v1\", \"k2\":\"v2\" }"
then both PCRE2 and perl return this output:
["\"v1\"","\"v2\""]
However, if that same pattern is moved into a (?(DEFINE)...) block like this:
/((?&Value))(?(DEFINE)(?<Value>"[^"]*":(*SKIP)(*F)|"[^"]*"))/g
The results in PCRE2 are:
["\": { \"","\":\"","\", \"",":"]
The results in perl are:
["\"v1\"",undef,"\"v2\"",undef]
Instead of (*SKIP) moving the bumpalong position when it failed within the
(?(DEFINE)...) group, it moved to the next text position and tried to match
again.
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