Glenn, thank you very much. The extra ( ) pair does not pose much of a problem because users can use (?: ) to make the bracket pair non capturing, i.e. bracket pairs with ?: will not collect data for .sh.match
Olga On Mon, Jan 3, 2011 at 11:28 PM, Glenn Fowler <[email protected]> wrote: > > this was done before you asked > > ast regex(3) has REG_COMMENT which is controlled by the 'x' runtime flag > (as opposed to the suggested 'f') for perl support > > to get around the ]] parsing problem (and to get the shell to parse it in the > first place) > simply (...) the entire expression after the flags: > > [[ "aaa bbb 123 ccc" == ~(Ex)( > (...) # aaa > [[:blank:]]+ > [[:alnum:]]+ # bbb > [[:blank:]]+ > ([[:digit:]]+) # 123 > [[:blank:]]+ > ) ]] && printf "match!\n" > > On Mon, 27 Dec 2010 16:28:12 +0100 =?KOI8-R?B?z8zYx8Egy9LZ1sHOz9fTy8HR?= > wrote: >> I'd like to request a "free-spacing and comments" regex mode in ksh so >> that regular expressions, i.e. ~(G), ~(E), ~(X), ~(P), can span >> multiple lines like in perl, JAVA or VB.NET. "Free-spacing and >> comments" in this context means that white spaces are ignored for >> pattern patching and any thing between a "#" character and the end of >> the line is treated as comment, i.e. are "removed" at regex compile >> time, and white spaces and "#" can only be used for matching if >> explicitly addressed with [[:space:]], [[:blank:]] or octal >> addressing. > >> Below is an example for the proposed functionality, using modifier "f" >> to enable the free-spacing and comments mode: > >> [[ "aaa bbb 123 ccc" == ~(Ef) >> (...) >> [[:blank:]]+ >> [[:alnum:]]+ >> [[:blank:]]+ >> ([[:digit:]]+) >> [[:blank:]]+ >> ]] && printf "match!\n" > >> This example should print "match!" > >> Olga >> -- >> , _ _ , >> { \/`o;====- Olga Kryzhanovska -====;o`\/ } >> .----'-/`-/ [email protected] \-`\-'----. >> `'-..-| / http://twitter.com/fleyta \ |-..-'` >> /\/\ Solaris/BSD//C/C++ programmer /\/\ >> `--` `--` >> _______________________________________________ >> ast-developers mailing list >> [email protected] >> https://mailman.research.att.com/mailman/listinfo/ast-developers > > -- , _ _ , { \/`o;====- Olga Kryzhanovska -====;o`\/ } .----'-/`-/ [email protected] \-`\-'----. `'-..-| / http://twitter.com/fleyta \ |-..-'` /\/\ Solaris/BSD//C/C++ programmer /\/\ `--` `--` _______________________________________________ ast-developers mailing list [email protected] https://mailman.research.att.com/mailman/listinfo/ast-developers
