https://bugs.exim.org/show_bug.cgi?id=1689
Bug ID: 1689
Summary: Catch up with some of the replacement syntax of the
Boost regex engine
Product: PCRE
Version: N/A
Hardware: All
URL: http://www.boost.org/doc/libs/1_55_0/libs/regex/doc/ht
ml/boost_regex/format/boost_format_syntax.html
OS: All
Status: NEW
Severity: wishlist
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: henrik.hank@???
CC: pcre-dev@???
Hello,
please take a look at these documentation page of the Boost regex engine:
http://www.boost.org/doc/libs/1_55_0/libs/regex/doc/html/boost_regex/format/boost_format_syntax.html
, especially the topic "Conditionals".
This allows you, e.g., to search for:
> ((?<digit>\d)|(?<wordChar>\p{Alpha}))
and replace it with:
> \[(?{digit}A digit, :No digit, but a )(?{wordChar}word character:not a word character)\]
resulting in:
> [A digit, not a word character][No digit, but a word character][No digit, but a word character][A digit, not a word character]
This replacement syntax is potentially extremely useful because it extends your
possibilities intensely. So, is there a chance for this to get implemented?
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