Bash-3.1 Official patch 10

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release: 3.1
Patch-ID: bash31-010

Bug-Reported-by: vw@vonwolff.de
Bug-Reference-ID: <20060123135234.1AC2F1D596@wst07.vonwolff.de>
Bug-Reference-URL: 
http://lists.gnu.org/archive/html/bug-bash/2006-01/msg00090.html

Bug-Description:

There is a difference in behavior between bash-3.0 and bash-3.1 involving
parsing of single- and double-quoted strings occurring in old-style
command substitution.  The difference has to do with how backslashes are
processed.  This patch restores a measure of backwards compatibility while
the question of POSIX conformance and ultimately correct behavior is discussed.

Patch:

*** ../bash-3.1/parse.y Fri Nov 11 23:14:18 2005
--- parse.y     Wed Jan 25 14:55:18 2006
***************
*** 2899,2903 ****
        else if MBTEST(qc == '`' && (ch == '"' || ch == '\'') && in_comment == 
0)
        {
!         nestret = parse_matched_pair (0, ch, ch, &nestlen, rflags);
          goto add_nestret;
        }
--- 2901,2909 ----
        else if MBTEST(qc == '`' && (ch == '"' || ch == '\'') && in_comment == 
0)
        {
!         /* Add P_ALLOWESC so backslash quotes the next character and
!            shell_getc does the right thing with \<newline>.  We do this for
!            a measure  of backwards compatibility -- it's not strictly the
!            right POSIX thing. */
!         nestret = parse_matched_pair (0, ch, ch, &nestlen, rflags|P_ALLOWESC);
          goto add_nestret;
        }
*** ../bash-3.1/patchlevel.h    Wed Jul 20 13:58:20 2005
--- patchlevel.h        Wed Dec  7 13:48:42 2005
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 9
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 10
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                           Live Strong.  No day but today.
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/