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NAME

       zshdb - zsh debugger

SYNOPSIS

       zshdb [options] [--] script-name [script options]

       zshdb [options] -c execution-string

DESCRIPTION

       "zshdb" is a zsh script to which arranges for another zsh script to be
       debugged.  The debugger has a similar command interface as gdb(1).

       If you used zshdb script and need to pass options to the script to be
       debugged, add "--" before the script name. That will tell zshdb not to
       try to process any further options.

OPTIONS

       -h | --help
           Print a usage message on standard error and exit with a return code
           of 100.

       -A | --annotation level
           Sets to output additional stack and status information which allows
           front-ends such as emacs to track what's going on without polling.

           This is needed in for regression testing. Using this option is
           equivalent to issuing:

             set annotation LEVEL

           inside the debugger.

       -B | --basename
           In places where a filename appears in debugger output give just the
           basename only. This is needed in for regression testing. Using this
           option is equivalent to issuing:

             set basename on

           inside the debugger.

       -n | --nx | --no-init
           Normally the debugger will read debugger commands in "~/.zshdbinit"
           if that file exists before accepting user interaction.
           ".zshdbinit" is analogus to Perl's ".perldb" or GNU gdb's
           ".gdbinit": a user might want to create such a debugger profile to
           add various user-specific customizations.

           Using the "-n" option this initialization file will not be read.
           This is useful in regression testing or in tracking down a problem
           with one's ".zshdbinit" profile.

       -c | --command command-string
           Instead of specifying the name of a script file, one can give an
           execution string that is to be debugged. Use this option to do
           that.

       -q | --quiet
           Do not print introductory version and copyright information. This
           is again useful in regression testing where we don't want to
           include a changeable copyright date in the regression-test
           matching.

       -x | --eval-command debugger-cmdfile
           Run the debugger commands debugger-cmdfile before accepting user
           input.  These commands are read however after any ".zshdbinit"
           commands. Again this is useful running regression-testing debug
           scripts.

       -L | --library debugger-library
           The debugger needs to source or include a number of functions and
           these reside in a library. If this option is not given the default
           location of library is relative to the installed zshdb script:
           "../lib/zshdb".

       -T | --tempdir temporary-file-directory
           The debugger needs to make use of some temporary filesystem storage
           to save persistent information across a subshell return or in order
           to evaluate an expression. The default directory is "/tmp" but you
           can use this option to set the directory where debugger temporary
           files will be created.

       -t | --tty tty-name
           Debugger output usually goes to a terminal rather than stdout or
           stdin which the debugged program may use. Determination of the tty
           or pseudo-tty is normally done automatically. However if you want
           to control where the debugger output goes, use this option.

       -V | --version
           Show version number and no-warranty and exit with return code 1.

BUGS

       The way this script arranges debugging to occur is by including (or
       actually "source"-ing) some debug-support code and then sourcing the
       given script or command string.

       One problem with sourcing a debugged script is that the program name
       stored in $0 will not be the name of the script to be debugged. The
       debugged script will appear in a call stack not as the top item but as
       the item below "zshdb".

       The "zshdb" script option assume a version of zsh with debugging
       support, zsh 4.3.6-dev-2 or later.

       The debugger slows things down a little because the debugger has to
       intercept every statement and check to see if some action is to be
       taken.

SEE ALSO

       ·   <http://bashdb.sourceforge.net/bashdb.php> - Until a full manual
           is written, this manual for a similar bash debugger may give some
           guidance. The two debuggers have similar command interfaces (and
           code).

       ·   <http://bashdb.sourceforge.net> - the homepage for the project for
           the family of debugger, zshdb, bashdb.

AUTHOR

       The current version is maintained (or not) by Rocky Bernstein.

COPYRIGHT

         Copyright (C) 2009 Rocky Bernstein
         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; either version 2 of the License, or
         (at your option) any later version.

         This program is distributed in the hope that it will be useful,
         but WITHOUT ANY WARRANTY; without even the implied warranty of
         MERCHANTABILITY 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



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