Bash 3.0 Official Patch 4

[Chet Ramey]

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

Bash-Release: 3.0
Patch-ID: bash30-004

Bug-Reported-by: Stephane Chazelas <stephane_chazelas@yahoo.fr>
Bug-Reference-ID: <20040902131957.GC1860@frhdtmp102861.morse.corp.wan>
Bug-Reference-URL: 
http://lists.gnu.org/archive/html/bug-bash/2004-07/msg00291.html

Bug-Description:

Calculation of lengths and offsets for parameter string length and substring
expansion does not correctly account for multibyte characters.

Patch:

 *** ../bash-3.0/subst.c        Sun Jul  4 13:56:13 2004
--- subst.c     Thu Aug 12 13:36:17 2004
***************
*** 4692,4695 ****
--- 4692,4715 ----
  }
  
+ #if defined (HANDLE_MULTIBYTE)
+ size_t
+ mbstrlen (s)
+      const char *s;
+ {
+   size_t clen, nc;
+   mbstate_t mbs;
+ 
+   nc = 0;
+   memset (&mbs, 0, sizeof (mbs));
+   while ((clen = mbrlen(s, MB_CUR_MAX, &mbs)) != 0 && (MB_INVALIDCH(clen) == 
0))
+     {
+       s += clen;
+       nc++;
+     }
+   return nc;
+ }
+ #endif
+       
+ 
  /* Handle the parameter brace expansion that requires us to return the
     length of a parameter. */
***************
*** 4747,4758 ****
        {
          t = get_dollar_var_value (arg_index);
!         number = STRLEN (t);
          FREE (t);
        }
  #if defined (ARRAY_VARS)
!       else if ((var = find_variable (name + 1)) && array_p (var))
        {
          t = array_reference (array_cell (var), 0);
!         number = STRLEN (t);
        }
  #endif
--- 4767,4778 ----
        {
          t = get_dollar_var_value (arg_index);
!         number = MB_STRLEN (t);
          FREE (t);
        }
  #if defined (ARRAY_VARS)
!       else if ((var = find_variable (name + 1)) && (invisible_p (var) == 0) 
&& array_p (var))
        {
          t = array_reference (array_cell (var), 0);
!         number = MB_STRLEN (t);
        }
  #endif
***************
*** 4767,4771 ****
            dispose_words (list);
  
!         number = STRLEN (t);
          FREE (t);
        }
--- 4787,4791 ----
            dispose_words (list);
  
!         number = MB_STRLEN (t);
          FREE (t);
        }
***************
*** 4872,4876 ****
      case VT_VARIABLE:
      case VT_ARRAYMEMBER:
!       len = strlen (value);
        break;
      case VT_POSPARMS:
--- 4892,4896 ----
      case VT_VARIABLE:
      case VT_ARRAYMEMBER:
!       len = MB_STRLEN (value);
        break;
      case VT_POSPARMS:
*** ../bash-3.0/include/shmbutil.h      Mon Apr 19 09:59:42 2004
--- include/shmbutil.h  Thu Sep  2 15:20:47 2004
***************
*** 32,35 ****
--- 32,37 ----
  extern size_t xdupmbstowcs __P((wchar_t **, char ***, const char *));
  
+ extern size_t mbstrlen __P((const char *));
+ 
  extern char *xstrchr __P((const char *, int));
  
***************
*** 39,42 ****
--- 41,47 ----
  #endif
  
+ #define MBSLEN(s)     (((s) && (s)[0]) ? ((s)[1] ? mbstrlen (s) : 1) : 0)
+ #define MB_STRLEN(s)  ((MB_CUR_MAX > 1) ? MBSLEN (s) : STRLEN (s))
+ 
  #else /* !HANDLE_MULTIBYTE */
  
***************
*** 54,57 ****
--- 59,64 ----
  #define MB_NULLWCH(x)         (0)
  #endif
+ 
+ #define MB_STRLEN(s)          (STRLEN(s))
  
  #endif /* !HANDLE_MULTIBYTE */

*** ../bash-3.0/patchlevel.h    Wed Aug 22 08:05:39 2001
--- patchlevel.h        Thu Sep  2 15:04:32 2004
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 3
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 4
  
  #endif /* _PATCHLEVEL_H_ */