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Re: [Bug-readline] Cannot use M-<key> bindings in incremental search

From: Chet Ramey
Subject: Re: [Bug-readline] Cannot use M-<key> bindings in incremental search
Date: Sat, 28 Aug 2010 19:55:41 -0400

> If I bind incremental search to a M-<key>, and start the search, 
> Readline does not interpret correctly subsequent presses of the key. 
> Instead of showing the next match, what happens is that the search is 
> restarted, with the search string reset to empty.
> My .inputrc:
> "\es": reverse-search-history # Meta-s
> "\eS": forward-search-history # Meta-S
> Could this be because the lookup of the key in _rl_isearch_dispatch 
> (isearch.c:340) does not match for bindings involving Meta because the 
> input character 'c' does not map to an ISFUNC in the current _rl_keymap? 

It is, but changing this is a problem.  I can easily modify the code so
that it handles keymap[key].type == ISKMAP and behaves appropriately, but
it introduces an incompatibility.  ESC is one of the characters that
terminates an incremental search; making this change will break that.  I'm
reluctant to change the behavior as a result.


``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/

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