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

Bash-Release: 4.0
Patch-ID: bash40-023

Bug-Reported-by: Andreas Schwab <[email protected]>
Bug-Reference-ID: <[email protected]>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2009-04/msg00160.html

Bug-Description:

If the prompt length exactly matches the screen width, and the prompt ends
with invisible characters, readline positions the cursor incorrectly.

Patch:

*** ../bash-4.0-patched/lib/readline/display.c  2009-01-04 14:32:32.000000000 -0500
--- lib/readline/display.c      2009-04-25 21:42:18.000000000 -0400
***************
*** 1895,1898 ****
--- 1897,1904 ----
   woff = WRAP_OFFSET (_rl_last_v_pos, wrap_offset);
   cpos = _rl_last_c_pos;
+
+   if (cpos == 0 && cpos == new)
+     return;
+
 #if defined (HANDLE_MULTIBYTE)
   /* If we have multibyte characters, NEW is indexed by the buffer point in
***************
*** 1908,1914 ****
        desired display position. */
       if ((new > prompt_last_invisible) ||            /* XXX - don't use woff here */
!         (prompt_physical_chars > _rl_screenwidth &&
          _rl_last_v_pos == prompt_last_screen_line &&
!          wrap_offset >= woff &&
          new > (prompt_last_invisible-(_rl_screenwidth*_rl_last_v_pos)-wrap_offset)))
          /* XXX last comparison might need to be >= */
--- 1914,1920 ----
        desired display position. */
       if ((new > prompt_last_invisible) ||            /* XXX - don't use woff here */
!         (prompt_physical_chars >= _rl_screenwidth &&
          _rl_last_v_pos == prompt_last_screen_line &&
!          wrap_offset >= woff && dpos >= woff &&
          new > (prompt_last_invisible-(_rl_screenwidth*_rl_last_v_pos)-wrap_offset)))
          /* XXX last comparison might need to be >= */
*** ../bash-4.0/patchlevel.h    2009-01-04 14:32:40.000000000 -0500
--- patchlevel.h        2009-02-22 16:11:31.000000000 -0500
***************
*** 26,30 ****
    looks for to find the patch level (for the sccs version string). */

! #define PATCHLEVEL 22

 #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
    looks for to find the patch level (for the sccs version string). */

! #define PATCHLEVEL 23

 #endif /* _PATCHLEVEL_H_ */