support PCRE case escape sequences

[iCode]

apparently the \u \U escapes are not used in the AutoIt version of PCRE unless the running PCRE in JS mode, so...

AHK supports at least some of these and it sure would make case changes a lot easier in certain instances...

\l lowercase next char
\u uppercase next char
\L lowercase until \E
\U uppercase until \E

example:

StringRegExpReplace("this. that", "\. ([a-z])", ". \u1")
; returns: this. That

ref: ​http://perldoc.perl.org/perlre.html

[jchd18]

AutoIt uses a standard copy of PCRE and it's highly unlikely that the devs would want to maintain a modified/enhanced version just to support these Perl escapes.

[jchd18]

PCRE still doesn't support these Perlisms, so it's extremely unlikely that AutoIt will ever implement them.

Also please note that the replace part isn't a pattern: only $1, $2, $3, ... (or \1, \2, \3, ...) are recognized there.

Closing as "rejected".