Re: Weird exit caused in a trap DEBUG which sources a file.

["Rocky Bernstein" <rocky.bernstein@xxxxxxxxx>]

I don't get different results by adding -f. However I do get different
results depending on the zsh version.

The buggy output was run using the stock zsh for Ubunty Hardy Heron:
zsh 4.3.4 (i686-pc-linux-gnu)

I don't get it for the "zsh-beta" package which is
zsh 4.3.5-dev-0+ (i686-pc-linux-gnu)

Life would be good were that were the end of the story.

This is this is whittled down from a larger set of files, and in that
larger set, I still have the problem no matter which of the above two
zsh's is used or a third or the one I built from recent CVS with the
patches I posted applied. So it looks like I'll have to go back and
start again from the larger program and whittle it down again.

If anyone is aware of what bug was fixed between 4.3.4 and 4.3.5-dev-0
that addresses this, it might help understand the nature of the
problem better. (I will also at some point scour ChangeLogs to try to
figure this out too.)

Thanks for double checking and the suggestions.


On Thu, Jul 31, 2008 at 5:01 AM, Peter Stephenson <pws@xxxxxxx> wrote:
> "Rocky Bernstein" wrote:
>> Below is a small program whittled down from a larger one. It has
>> behavior I can't figure out.
>>
>> It seems to show that when a function is called via trap DEBUG and you
>> then source a file and it has a statement in it, on return from the
>> TRAP an exit will be taken.  Here is the program:
>>
>> #!/usr/bin/zsh
>> function debug_trap_handler {
>>     print $functrace[1]
>>     do_bug
>> }
>>
>> function do_bug {
>>    . ./bug-file
>> }
>>
>> trap 'echo EXIT hit' EXIT
>> trap 'debug_trap_handler' DEBUG
>> a=1
>> b=2
>> d=3
>>
>> In "bug-file" put any command. ":" will do. Or a print statement.
>> Let's say it contains the line:
>> print bug file here
>>
>> When I run the above I get:
>>
>> $ ./zshtrace.sh
>>
>> ./zshtrace.sh:12
>> bug file here
>> EXIT hit
>
> That certainly looks like a bug, but it didn't happen for me.  What
> version of the shell do you have, and does it happen with the -f option
> after /usr/bin/zsh?
>
> --
> Peter Stephenson <pws@xxxxxxx>                  Software Engineer
> CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
> Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070
>