From: Michael Prokop <news@michael-prokop.at>
To: zsh-workers@sunsite.dk
Subject: Some questions regarding prompt themes
Date: Mon, 16 Aug 2004 09:20:52 +0200 [thread overview]
Message-ID: <2004-08-16T08-32-23@devnull.michael-prokop.at> (raw)
Hello,
I've tested the below documented behaviour with zsh versions 4.2.0
and 4.2.1 (CVS-sources). Some time ago I wrote my own prompt-themes
and noticed a (at least for me) strange and maybe unwanted
behaviour:
$ zsh -f
$ echo $PROMPT $PS1 $PS2 $PS3 $PS4
%m%# %m%# %_> ?# +%N:%i>
$ autoload promptinit && promptinit
$ prompt -p # Preview given themes (defaults to all)
[...]
mika@tweety ~ %
Now I've a PROMPT-variable different from the above ("%m%# ").
Bart Schaefer wrote:
,---- [ Quoting http://www.zsh.org/mla/workers/2003/msg00434.html ]
| } One problem I noticed the other day is if one prompt sets PS3, PS4, or
| } RPS1, then those vars won't get reset when changing prompts, even when
| } setting the prompt to "off".
|
| It's a general shortcoming that themes only change the parts of the prompt
| that they're interested in; "off" is just another theme with a silly name.
|
| To really have "prompt off" mean what it seems to mean, the theme system
| would have to save and restore the original values of all the variables.
`----
My questions:
* In the prompt-theme "walters" exists a "export PROMPT=...":
$ grep -l export /usr/share/zsh/4.2.0/functions/Prompts/prompt*
/usr/share/zsh/4.2.0/functions/Prompts/prompt_walters_setup
Is using 'export PROMPT' in prompt-themes reasonable?
* Is it possible to "break out" of a precmdstatement?
Some themes are using the precmd-option:
$ pwd && grep -l precmd *prompt* | wc -l
/usr/share/zsh/4.2.0/functions/Prompts
13
$ grep 'precmd.*prompt_' *prompt* | wc -l
8
e.g. prompt_adam1_setup sets the prompt via the precmd statement.
AFAICS this results in problems when running stuff like
export PS1='test'
manually which IMHO does not work as it should.
* Would it be possible that 'prompt -p' does *not* export any
prompt-variables so the prompt doesn't get modified by just
running a preview of one/some/all themes?
* Does there exist a way to reset all prompt-values? Something like
'prompt reset' would be very nice IMHO.
* What's the "right" way to set variables in a prompt-theme to avoid
problems with other themes? Would it make sense to "unset PS1
PS2..." at the beginning of a prompt-theme to avoid any
side-effects from other themes?
thanks for any feedback && regards,
(-: Michael
--
A german webpage for zsh / eine deutsche Webpage zur zsh:
http://www.michael-prokop.at/computer/tools_zsh.html
Die Zsh-Liebhaber-Seite:
http://www.michael-prokop.at/computer/tools_zsh_liebhaber.html
next reply other threads:[~2004-08-16 7:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-16 7:20 Michael Prokop [this message]
2004-08-16 8:37 ` Bart Schaefer
2004-08-16 11:00 ` Michael Prokop
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