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Full Discussion: Stack Trace
Top Forums Shell Programming and Scripting Stack Trace Post 302817371 by DGPickett on Wednesday 5th of June 2013 04:05:39 PM
Old 06-05-2013
You lack an unpush if things go ok in the first leven N function and bad in the second level N function. You might put the message on the end of an exported env. variable in a subshell, so when you return it removes your addition.
Code:
#!/usr/bin/ksh
xxx(){
 ( a=$a/xxx 
 return 1 )
  return $!
}
a=
xxx
echo "xxx returns $?
a='$a'"
~
~
~
~
~
~
~
~
~
"funcewrite" 15 lines, 102 characters 
$ funcewrite    
xxx returns 1
a=''
$

This is much nicer in JAVA/C++ (Abstract Class method inheritance)! I wrote a similar bit for XML schema parse, where the containing element could call its parent first to print out his path, which rippled up to root where it started printing because there was no parent and then unrolled back printing each level to the original caller to print his bit last.
 

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LEARN ABOUT DEBIAN

lurker-search

LURKER-SEARCH(1)					      General Commands Manual						  LURKER-SEARCH(1)

NAME

       lurker-search -- searches for messages in a lurker database

SYNOPSIS

       lurker-search [-c <config-file>]  [-k <keyword>]  [-d -f -i -v -q]  [<terms>*]

DESCRIPTION

       lurker-search searches a lurker database the same way as the web interface. It can output summary information and delete messages.

OPTIONS

       -c config-file
		 Use this config file for lurker settings.

       -k keyword
		 Tag the matching messages with this keyword.

       -d	 Delete the messages found by this search

       -f	 Don't prompt before deleting

       -i	 Command line paramers are not search terms, but message IDs.

       -v	 Output message summary information

       -q	 Don't output message ids or status

SEARCH TERMS

       Lurker-search accepts these keywords for searching:

       -xxx	 select messages which do NOT match this term

       id:xxx	 select a message by the Message-ID field

       rt:xxx	 select messages which reply to the chosen Message-ID

       th:xxx	 select messages included in this thread

       ml:xxx	 select messages in this mailing list

       gr:xxx	 select messages in this mailing list group

       au:xxx	 select messages with this term in the author fields

       sb:xxx	 select messages with this word in the subject

       lang:xxx  select messages in this language

SEE ALSO

       lurker-index(1), lurker-prune(1), lurker-params(1), lurker-list(1)

       lurker documentation on http://lurker.sourceforge.net/

COPYRIGHT

       Copyright (C) 2002: Wesley W. Terpstra <terpstra@users.sourceforge.net>

       This  program  is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; version 2.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY	WARRANTY;  without  even  the  implied	warranty  of  MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You  should  have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

BUGS

       Before reporting a bug, please confirm that the bug you found is still present in the latest official release.  If  the	problem  persists,
       then send mail with instructions describing how to reproduce the bug to <lurker-users@lists.sourceforge.net>.

																  LURKER-SEARCH(1)
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