zshrc: Move preexec() code to hooks
authorFrank Terbeck <ft@grml.org>
Tue, 5 Mar 2013 14:22:03 +0000 (15:22 +0100)
committerFrank Terbeck <ft@grml.org>
Tue, 5 Mar 2013 17:22:01 +0000 (18:22 +0100)
This allows for way more control and customisation by the user, just
like the same move with precmd(), that was done earlier does.

Signed-off-by: Frank Terbeck <ft@grml.org>

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