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Smarter matcher-list: skip previous sets

X-seq: zsh-workers 35194
From: Daniel Hahler <genml+zsh-workers@xxxxxxxxxx>
To: Zsh Hackers' List <zsh-workers@xxxxxxx>
Subject: Smarter matcher-list: skip previous sets
Date: Tue, 19 May 2015 00:11:48 +0200
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I've noticed that my matcher-list setup causes a (possibly expensive)
completion function to be called multiple times, although the input was
not be changed by the matcher-list substitution.

The functrace is:

    _manage.py:4 _manage.py:465 (eval):1 _dispatch:63 _normal:40 _complete:117
    _main_complete:194 _zsh_highlight_widget_complete-word:0 zsh:1

My matcher-list setup:

    zstyle ':completion:*' matcher-list '' '+m:{a-z}={A-Z}' '+m:{A-Z}={a-z}' \
      '+r:|[._-]=* r:|=*' '+l:|=* r:|=*'

I think it would be smart if these calls would be skipped in case the
input has not changed (because it was all lower-case in the beginning).


Regards,
Daniel.
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Follow-Ups:
- Re: Smarter matcher-list: skip previous sets
  - From: Bart Schaefer

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