Problem with function

Problem with function

[Bruno Bonfils]

Hi all,

i want to use dynamic titles with screen. That why's i want to do a
print before each command, like this :

mutt () {
        print -Pn "\e]0; Mutt\a"
        \mutt
}

when i do that, i still have the mutt's completion, but when i press
enter, the print are executed (and work with screen) but the zsh
session crash :(

I hope you can help me, bests regards

-- 
 Bruno Bonfils             KeyID F39DCCF5    
 Sys Admin GNU/Linux 
 http://www.debian-fr.org

RE: Problem with function

[Borsenkow Andrej]

> i want to use dynamic titles with screen. That why's i want to do a
> print before each command, like this :
> 
> mutt () {
>         print -Pn "\e]0; Mutt\a"
>         \mutt
> }
> 
> when i do that, i still have the mutt's completion, but when i press
> enter, the print are executed (and work with screen) but the zsh
> session crash :(
> 

Set title in preexec function. You do not say what version you have;
info from current version:

preexec
     Executed just after a command has been read and is about to be
     executed.  If the history mechanism is active (and the line was not
     discarded from the history buffer), the string that the user typed
     is passed as the first argument, otherwise it is an empty string.
     The actual command that will be executed (including expanded
     aliases) is passed in two different forms: the second argument is
     a single-line, size-limited version of the command (with things
     like function bodies elided); the third argument contains the full
     text that is being executed.

-andrej

Re: Problem with function

[Bart Schaefer]

On May 7, 12:03pm, Bruno Bonfils wrote:
}
} mutt () {
}         print -Pn "\e]0; Mutt\a"
}         \mutt
} }
} 
} the print are executed (and work with screen) but the zsh
} session crash :(

Using \mutt does NOT stop the mutt function from being called.  It only
stops an *alias* for mutt from expanding, if you had one.  Zsh crashes
because the heap overflows allocating memory for the infinitely recursive
function that you've written.

You want:

    mutt () {
      print -Pn "\e]0; Mutt\a"
      command mutt
    }

This is question 3.16 in the FAQ, by the way.

If you compiled zsh yourself, check out the --enable-max-function-depth
flag that you can pass to the configure script.

-- 
Bart Schaefer                                 Brass Lantern Enterprises
http://www.well.com/user/barts              http://www.brasslantern.com

Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net