2015-03-06 11:43:24 -0500, Chet Ramey:
> On 3/5/15 12:36 PM, Greg Wooledge wrote:
> > On Thu, Mar 05, 2015 at 05:26:00PM +0000, Stephane Chazelas wrote:
> >> The bash manual only points to regex(3).
> >>
> >> So it's down to your system's regex library (uses
> >> regcomp(REG_EXTENDED)) which on recent GNU systems supports \s.
> >
> > I see. So it's another nonportable feature like printf '%(%s)T'.
>
> It's an imperfect world. I'd rather not replace the system's regexp
> library, just like I'd rather use the system's strftime(3) if it's
> available.
[...]
BTW:
$ ltrace -e regcomp bash -c 'bs="\\"; [[ a =~ ${bs}[\.s ]]'
bash->regcomp(0x7fff4d48bef0, "\\[.s", 1)
I think it should be
bash->regcomp(0x7fff4d48bef0, "\\[\\.s", 1)
--
Stephane
