zsh v 2.6-beta13 bug

zsh v 2.6-beta13 bug

[Huy Le]

On:
  HP-UX A.09.01 A 9000/715
  IRIX 5.3 IP22 mips
  SunOS 5.4 sun4d sparc

In 'bindkey -v' mode, if I do the '~' command on an empty line,
the cursor moves up to the first cursor of the line before the current
line.  Instead, nothing should happen.

Additionally, on HP, after doing that, I can sometimes crash zsh, if I do:
1. '~' (as described above)
2. 'j' 'k' 'j' 'k'... (until there's a beep)
3. 'a' (add) ' ' (any character)  (a '^Q' suddenly appears on the command line)
4. <CTRL>-'c' (break)
zsh: 13975 bus error  zsh -f

On SunOS, after step 4, the shell doesn't crash but instead freezes.

- Huy

Re: zsh v 2.6-beta13 bug

[Peter Stephenson]

huyle@bradbert.ugcs.caltech.edu wrote:
> In 'bindkey -v' mode, if I do the '~' command on an empty line,
> the cursor moves up to the first cursor of the line before the current
> line.  Instead, nothing should happen.

I didn't see a patch for this; maybe I was asleep.

*** Src/zle_vi.c.swp	Mon Apr 15 07:33:47 1996
--- Src/zle_vi.c	Mon Apr 29 09:59:59 1996
***************
*** 742,748 ****
  	    line[cs] = tulower(line[cs]);
  	cs++;
      }
!     if (cs == eol)
  	cs--;
  }
  
--- 742,748 ----
  	    line[cs] = tulower(line[cs]);
  	cs++;
      }
!     if (cs == eol && cs)
  	cs--;
  }
  
-- 
Peter Stephenson <pws@ifh.de>       Tel: +49 33762 77366
WWW:  http://www.ifh.de/~pws/       Fax: +49 33762 77330
Deutches Electronen-Synchrotron --- Institut fuer Hochenergiephysik Zeuthen
DESY-IfH, 15735 Zeuthen, Germany.