On Mon, 18 Jun 2012 17:28:43 +0200 =?KOI8-R?B?z8zYx8Egy9LZ1sHOz9fTy8HR?= wrote:
> So what should I do? Escape the } and {?aha not sure it looks like it involves the ksh lexer/parser and how it handles the tokenization implications of ~(...) mid-stream dgk and I will talk about it this afternoon > On Mon, Jun 18, 2012 at 5:21 PM, Glenn Fowler <[email protected]> wrote: > > > > On Mon, 18 Jun 2012 17:04:44 +0200 =?KOI8-R?B?z8zYx8Egy9LZ1sHOz9fTy8HR?= > > wrote: > >> from what I understand a {x,y} in extended regular expressions should > >> match x times but no more than y times. But ksh (ast-ksh.20120612) > >> returns no matches at all: > >> ksh -c 's="abbbc" ; d="${s/~(E)b{2,4}/dummy}" ; print -v .sh.match' > > > >> Is this a bug? > > > > first run with -x to checjk the parse > > > > ksh -cx 's="abbbc" ; d="${s/~(E)b{2,4}/dummy}" ; print -v .sh.match' > > > > and it does show a problem > > -- > > +t+ s=bbb > > +t+ d='bbb/dummy}' <====== > > +t+ print -v .sh.match > > -- > > > > we can double verify that the regex is ok by using the regex test harness > > -- > > bin/package use > > cd re > > print $'K\t~(E)b{2,4}\tabbbc\t(1,4)' > t.dat > > ./testregex t.dat > > -- > > > > so it looks like a battle between the 2 '}' in the ${...} expansion > > > -- > , _ _ , > { \/`o;====- Olga Kryzhanovska -====;o`\/ } > .----'-/`-/ [email protected] \-`\-'----. > `'-..-| / http://twitter.com/fleyta \ |-..-'` > /\/\ Solaris/BSD//C/C++ programmer /\/\ > `--` `--` _______________________________________________ ast-users mailing list [email protected] https://mailman.research.att.com/mailman/listinfo/ast-users
