https://bugs.exim.org/show_bug.cgi?id=1680
Bug ID: 1680
Summary: Creating the intersection of two regular expressions
Product: PCRE
Version: 10.10 (PCRE2)
Hardware: All
OS: All
Status: NEW
Severity: wishlist
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: david.gausmann@???
CC: pcre-dev@???
Hello Philip,
for one project I would require the possibility to calculate the intersection
of two regular expressions.
The intersection should be a regular expression which matches only those items
which whould be matches by both source regular expressions.
For Example:
1: ^a\d+
2: \d+b$
Will become the intersection: ^a\d+b$
This topic has been often discussed in the internet and it seems to be possible
for the most regular expressions (some exceptions are those regular expressions
which use a type 2 grammatic such as recursive patterns).
How do you think about this feature?
Kind Regards
David Gausmann
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