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

Bash-Release: 4.0
Patch-ID: bash40-020

Bug-Reported-by: Nicolai Lissner <nlissne@linux01.org>
Bug-Reference-ID: <20090412020510.GA29658@lilith>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2009-04/msg00104.html

Bug-Description:

If a SIGWINCH arrives while bash is performing redisplay, multi-line prompts
are displayed incorrectly due to the display code being called recursively.

Patch:

*** ../bash-4.0-patched/lib/readline/readline.h	2009-01-04 14:32:33.000000000 -0500
--- lib/readline/readline.h	2009-04-13 08:47:00.000000000 -0400
***************
*** 815,820 ****
  #define RL_STATE_MULTIKEY	0x200000	/* reading multiple-key command */
  #define RL_STATE_VICMDONCE	0x400000	/* entered vi command mode at least once */
  
! #define RL_STATE_DONE		0x800000	/* done; accepted line */
  
  #define RL_SETSTATE(x)		(rl_readline_state |= (x))
--- 815,821 ----
  #define RL_STATE_MULTIKEY	0x200000	/* reading multiple-key command */
  #define RL_STATE_VICMDONCE	0x400000	/* entered vi command mode at least once */
+ #define RL_STATE_REDISPLAYING	0x800000	/* updating terminal display */
  
! #define RL_STATE_DONE		0x1000000	/* done; accepted line */
  
  #define RL_SETSTATE(x)		(rl_readline_state |= (x))
*** ../bash-4.0-patched/lib/readline/display.c	2009-01-04 14:32:32.000000000 -0500
--- lib/readline/display.c	2009-04-13 08:29:54.000000000 -0400
***************
*** 513,516 ****
--- 513,517 ----
       data structures. */
    _rl_block_sigint ();  
+   RL_SETSTATE (RL_STATE_REDISPLAYING);
  
    if (!rl_display_prompt)
***************
*** 1237,1240 ****
--- 1238,1242 ----
    }
  
+   RL_UNSETSTATE (RL_STATE_REDISPLAYING);
    _rl_release_sigint ();
  }
*** ../bash-4.0-patched/lib/readline/terminal.c	2009-01-04 14:32:34.000000000 -0500
--- lib/readline/terminal.c	2009-04-13 08:43:00.000000000 -0400
***************
*** 356,360 ****
        if (CUSTOM_REDISPLAY_FUNC ())
  	rl_forced_update_display ();
!       else
  	_rl_redisplay_after_sigwinch ();
      }
--- 356,360 ----
        if (CUSTOM_REDISPLAY_FUNC ())
  	rl_forced_update_display ();
!       else if (RL_ISSTATE(RL_STATE_REDISPLAYING) == 0)
  	_rl_redisplay_after_sigwinch ();
      }
*** ../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 19
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 20
  
  #endif /* _PATCHLEVEL_H_ */