Re: Incompatible string substitution operations 2.05/3.00

[Chet Ramey]

pm@ardendo.se wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: i586
> OS: linux
> Compiler: gcc -I/usr/src/packages/BUILD/bash-2.05b 
> -L/usr/src/packages/BUILD/bash-2.05b/../readline-4.3
> Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i586' 
> -DCONF_OSTYPE='linux' -DCONF_MACHTYPE='i586-suse-linux' -DCONF_VENDOR='suse' 
> -DSHELL -DHAVE_CONFIG_H  -I.  -I. -I./include -I./lib  -O2 -march=i586 
> -mcpu=i686 -fmessage-length=0 -Wall -D_GNU_SOURCE -Wall -pipe -g 
> -fbranch-probabilities
> uname output: Linux foo 2.6.5-7.108-smp #1 SMP Wed Aug 25 13:34:40 UTC 2004 
> i686 i686 i386 GNU/Linux
> Machine Type: i586-suse-linux
>
> Bash Version: 2.05b
> Patch Level: 0
> Release Status: release
>
> Description:
>         The string substitution operations seem to differ between 2.05 and 3.00 
> of BASH, with respect to the pattern quoting.
>         See example below.
>         Is it a bug?

It was a bug fixed in bash-3.0.

>         I have not found it mentioned in any release notes - have I missed it 
> ir is it missing?

You missed it:

p.  The pattern substitution code no longer performs quote removal on
    the pattern before trying to match it, as the pattern removal
    functions do.

This means that the pattern substitution and pattern removal expansions
treat the pattern identically.

See http://lists.gnu.org/archive/html/bug-bash/2004-09/msg00058.html
and http://lists.gnu.org/archive/html/bug-bash/2004-09/msg00057.html

for previous discussion of this issue.

Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                                Live...Laugh...Love
Chet Ramey, ITS, CWRU    chet@po.cwru.edu 
http://tiswww.tis.cwru.edu/~chet/