Bugs for Sorcery are reported here

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http://bugs.sourcemage.org/show_bug.cgi?id=10576

           Summary: sscripts don't always clean after themselves
           Product: Sorcery
           Version: 1.13.x
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unknown
        AssignedTo: sm-sorcery-bugs AT lists.ibiblio.org
        ReportedBy: jakakranjc AT email.si


Try interrupting gaze alien .

This is caused by exit statements (script terminates asap, cleanup isn't 
called) and similarly "trap exit PIPE".

I added trap gaze_cleanup EXIT, which calls gaze_cleanup when the shell 
terminates. Since gaze is the only not root-only script, gaze_cleanup was 
added, to avoid erroring in clean_tmp_dir .

testcase for trap bla EXIT (it is indeed only run once):
#!/bin/bash
trap "echo i am all alone at the end of shell life" EXIT
echo  | sed -n p | sed -n p | cat
( exit 3 )
( ( ( exit 33 )  )  )
bash -c echo
su -c echo
echo end

however exec overrides it, so cast can't have it globally set. cast had only 
one bad exit (in help), but it wasn't trivial to fix, so I just added the 
trap 
again. The test shows it doesn't get carried to subshells, so it should be 
ok. 
(rm -rf nothing works quietly aswell)
To reproduce this: cast --invalid-option 

One bad exit in cleanse.

dispel, scribe and summon are similar to cast:
dispel -bla
summon -p bla
scribe adasfsdg

Maybe it is enough to add clean_tmp_dir to help for those scripts that exit 
there. To me that trap looks more tight though.

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