Bash-3.2 Official Patch 50

[Chet Ramey]

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

Bash-Release: 3.2
Patch-ID: bash32-050

Bug-Reported-by:        Jan Hnatek <Jan.Hnatek@Sun.COM>
Bug-Reference-ID:       <4A44991F.8010005@sun.com>
Bug-Reference-URL:      
http://lists.gnu.org/archive/html/bug-bash/2009-06/msg00084.html

Bug-Description:

On systems where mbrtowc() returns -2 when passed a length argument with
value 0, when using a multibyte locale, Readline's emacs-mode forward-char
at the end of a line will leave the point beyond the end of the line.

Patch:

*** ../bash-3.2-patched/lib/readline/mbutil.c   2009-06-16 11:26:50.000000000 
-0400
--- lib/readline/mbutil.c       2009-01-04 14:32:33.000000000 -0500
***************
*** 132,141 ****
      {
        tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
!       while (tmp > 0 && wcwidth (wc) == 0)
        {
          point += tmp;
          tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
-         if (MB_NULLWCH (tmp) || MB_INVALIDCH (tmp))
-           break;
        }
      }
--- 130,137 ----
      {
        tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
!       while (MB_NULLWCH (tmp) == 0 && MB_INVALIDCH (tmp) == 0 && wcwidth (wc) 
== 0)
        {
          point += tmp;
          tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
        }
      }
*** ../bash-3.2/patchlevel.h    Thu Apr 13 08:31:04 2006
--- patchlevel.h        Mon Oct 16 14:22:54 2006
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 49
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 50
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer

Chet Ramey, ITS, CWRU    chet@case.edu    http://tiswww.tis.case.edu/~chet/