Can someone answer this question about TRAP.  I have trap specified
in the main shell for the correct exits to remove some tmp files.  My
shell calles a function, if there is a error within the called function
the trap does not remove the files.  If I specify the trap within the
function that errors the files are removed corectly.  I beleived that
trap in the main should know there was a exit in the function and
remove the files.  Why does trap in the main not know a function failed
and remove the files?  Thanks in advance.  We are running the shell on
a sun server.

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Jeff wrote:
>   Can someone answer this question about TRAP.  I have trap specified
> in the main shell for the correct exits to remove some tmp files.  My
> shell calles a function, if there is a error within the called function
> the trap does not remove the files.  If I specify the trap within the
> function that errors the files are removed corectly.  I beleived that
> trap in the main should know there was a exit in the function and
> remove the files.  Why does trap in the main not know a function failed
> and remove the files?

You'll have to give some more information.  I tried to duplicate your
problem on Solaris 8[1] and couldn't see any problem like what you are
describing.  Here's what I tried:

$ uname -sr
SunOS 5.8
$ cat /tmp/foo.sh
#! /bin/sh

trap 'rm /tmp/abc' 0

foo ()
{
exit 1
}

touch /tmp/abc
file /tmp/abc
foo
$ /tmp/foo.sh
/tmp/abc:       empty file
$ file /tmp/abc
/tmp/abc:       cannot open: No such file or directory
$

So, it would appear that calling exit from inside a function still
causes the trap code to run.

- Logan

[1]  x86 edition, but it should hardly matter since well over 90% of the
code is identical, including probably all of the shell code.

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