Re: bash-4.3.33 regexp bug

[Stephane Chazelas]

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