Re: buzzed shell while running external editors

Anton Tolchanov wrote:
> 
> Hello everybody.
> 
>   I'm trying to use gqview on mac os x tiger, v10.4.2. Everything
> seems to work properly except of extenal editors handling. When I run
> jpegtran as an editor (like it is configured by default), gqview
> executes the command, the jpegtran does its job, but does not return
> control to gqview back, I see the grey "close" button and gqview
> thinks that the external editor is still running.
> 
>   I've managed to make some investigation. In src/editors.c gqview
> runs external editors via execvp() function through the shell
> specified in COMMAND_SHELL. Using /bin/ps I see that when the editor
> finishes executing, the shell still remains running.
> 
> ryzh@pear:~>ps | grep gqview
> 15384  p8  R+     0:13.42 gqview .
> 
> ryzh@pear:~>ps auxwj | grep 15384
> ryzh     15385   0.0  0,0        0      0  p8  Z+    1jan70   0:00.00  15384 15384 210e9e0    1 (bash)
> 
>   I've tried to change COMMAND_SHELL from 'sh' to '/bin/bash', but
> in vain. I've tried to run the command using execvp() directly
> (simply removing the first 2 elements of argv[] array), but the
> dialog window just does not show. I'm not a C programmer, so I just
> don't know how to fix such issue. I've tried gqview 2.0.1, 2.1.1 and
> version from CVS.

Try adding "; exit" to the commands that hang to specifically request that the
shell process quit when the script completes.


Or perhaps the command is hung waiting for input from the command line,
sometimes a command will appear to hang if it is waiting for input. The only fix
for this is to call the command in a way that does not initiate or disables
prompting for input (... or redirects needed data to the problematic command's
standard input).


Greetings,
John


-- 
John Ellis <[email protected]>

http://gqview.sourceforge.net <GQview> | http://hideseek.sourceforge.net
http://gqmpeg.sourceforge.net <GQmpeg> |     <Preferences Hide and Seek>


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