Re: TZ=... date affected PROMPT_COMMAND

[Chet Ramey]

jidanni@jidanni.org wrote:
> OK, now using Archimerged's cleaner version, I bet Matthew can
> reproduce this.
>
> root@jidanni1:/root# su - nobody
> No directory, logging in with HOME=/
> nobody@jidanni1:/$ PROMPT_COMMAND='prompt_status=\ $?'
> nobody@jidanni1:/$ PS1=$SPECIAL_PS1"\A\${prompt_status# 0} \W$ "
> 17:26 /$ TZ=America/Los_Angeles date
> Thu Apr 17 02:26:11 PDT 2008
> 02:26 /$ echo $BASH_VERSION
> 3.1.17(1)-release
> 02:26 /$ false
> 02:26 1 /$ true
> 02:26 /$ /bin/true
> 17:26 /$ 

Upgrade:

$ uname -a
Linux jenna 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 
GNU/Linux
$ PROMPT_COMMAND='prompt_status=\ $?'
$ PS1=$SPECIAL_PS1"\A\${prompt_status# 0} \W$ "
09:59 bash-3.2-patched$ TZ=America/Los_Angeles date
Thu Apr 17 06:59:41 PDT 2008
09:59 bash-3.2-patched$ false
09:59 1 bash-3.2-patched$ true
09:59 bash-3.2-patched$ /bin/false
10:00 1 bash-3.2-patched$ /bin/true
10:00 bash-3.2-patched$

Bash-3.2 fixed a bug involving temporary environments that sounds related.

Chet

--
``The lyf so short, the craft so long to lerne.'' - Chaucer

Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/