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ksh93 different results using -x option

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# 1  
Old 10-26-2011
Question ksh93 different results using -x option
This problem seems to be specific to ksh93.

If you run with set -x some scripts don't work properly. For example:

Code:
$ cat ksh.test2
[[ 6 > 8 ]] && print FUBAR! || print OK!
$
$ /bin/ksh93 ksh.test2
OK!
$ /bin/ksh93 -x ksh.test2
+ [[ 6 > 8 ]]
+ print FUBAR!
FUBAR!
$

Trying to find out why this is happening, as it makes it hard to debug some scripts when things like this fail with the "-x" option set. Haven't found anything similar to it searching the web yet.
Last edited by radoulov; 10-26-2011 at 06:07 PM.. Reason: Code tags!
# 2  
Old 10-26-2011
I cannot reproduce this with Version JM 93u 2011-02-08:

Code:
zsh-4.3.12[t]% ksh93 ksh.test2
OK!
zsh-4.3.12[t]% ksh93 -x ksh.test2
+ [[ 6 > 8 ]]
+ print OK!
OK!
zsh-4.3.12[t]% ksh93 -c 'print ${.sh.version}'
Version JM 93u 2011-02-08

It could be a bug, you may try to install a more recent version.
# 3  
Old 10-26-2011
Sorry - I should have clarified that we see this using ksh93e. Our system is frozen on this release, and it's reproducable on Solaris 8 and Solaris 10 systems. I just figured someone else had to of seen this at some point, and yet I can't find anyone mentioning it on the web.

I do not see the problem if I run it with ksh93r version, which we have installed, but isn't our default ksh.
Code:
lsslogin1$ ls -l /bin/ksh93e
lrwxrwxrwx   1 root     other         19 Oct 10  2009 /bin/ksh93e -> /opt/ksh93e/bin/ksh
lsslogin1$ ls -l /opt/ksh93e/bin/ksh
-rwxr-xr-x   1 root     bin       794624 Feb 28  2000 /opt/ksh93e/bin/ksh
lsslogin1$

Has anyone else seen this problem using ksh93e, and if so, is there a patch or workaround for it? Thank you!


Moderator's Comments:
Mod Comment Video tutorial on how to use code tags in The UNIX and Linux Forums.
Last edited by Franklin52; 10-27-2011 at 03:18 AM.. Reason: Please use code tags, thank you
# 4  
Old 10-27-2011
Just an idea: on Solaris you may have /usr/dt/bin/dtksh. It's a ksh93, but I don't recall the exact version.
# 5  
Old 10-27-2011
Thanks, but I don't think this is the problem. We do have the dtksh on our system, but we are not using it. If I run the dtksh with the -x option, it works OK. The problem is with the ksh93e version - just wish we knew why the "-x" option doesn't produce the same output with ksh93e.

Code:
lsslogin1$ ls -l /usr/dt/bin/*ksh*  /opt/ksh93e/bin/ksh
-rwxr-xr-x   1 root     bin       794624 Feb 28  2000 /opt/ksh93e/bin/ksh
-r-xr-xr-x   1 root     bin       740756 Jan 22  2005 /usr/dt/bin/dtksh
lsslogin1$

# 6  
Old 10-27-2011
I understand, I was just saying, that you could use dtksh as a workaround.
You could contact David Korn (and the other current KornShell developers) directly on the ast-* mailing lists.

Last edited by radoulov; 10-30-2011 at 05:05 PM..
# 7  
Old 10-27-2011
Thanks for the suggestion - I know we have workarounds, but it just complicates things when you have to have developers change the ksh just for debugging purposes only, and then change it back for real building/testing/execution.

I was just hoping someone could explain why using the "-x" or "set -x" option with ksh93e doesn't always work right.
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