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Sender: =?UTF-8?Q?Christian_H=C3=B6ltje?= <docwhat@gmail.com>
Date: Thu, 5 Jan 2012 11:23:16 -0500
From: =?utf-8?Q?Christian_H=C3=B6ltje?= <docwhat@gerf.org>
To: zsh-workers@zsh.org
Message-ID: <B3BC4505B3444C2EAEEF95F8B334D14F@gmail.com>
Subject: Teardown for prompts
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I have some suggestions for the promptinit stuff.... =20

1) Remove other prompt related hooks.  Currently, it removes preexec and =
precmd, but it doesn't remove chpwd, periodic, zshexit, nor zshaddhistory=
.
      e.g.
for hook in preexec precmd chpwd periodic zshexit zshaddhistory; do
          add-zsh-hook -D =22=24=7Bhook=7D=22 =22prompt=5F*=5F=24=7Bhook=7D=
=22
        done

     Bonus points for getting the list of hooks from add-zsh-hook itself.=


 2) Add a teardown function.  This could be used to unset things, etc. if=
 the prompt changes.  If prompt is switching from the prompt 'adam2', it =
would look for prompt=5Fadam2=5Fteardown and run it if it exists before s=
witch to the new prompt.

 3) On switching away from a prompt, look for any and all variables and f=
unctions with pattern =22prompt=5F=24=7Bcurrent=5Fprompt=5Fname=7D=5F*=22=
 and unset/unfunction them.

I discovered this when I wrote a prompt that used the chpwd hook to try t=
o minimize certain VCS checks (an optimization) and that function was sti=
ll being called when I switched to a new prompt. =20

-- =20
Christian H=C3=B6ltje
docwhat=40gerf.org
http://docwhat.org/


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