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Re: convert-meta and UTF-8

From: Chet Ramey
Subject: Re: convert-meta and UTF-8
Date: Tue, 7 Dec 2004 10:59:55 -0500

> Using a terminal which works with real Meta characters instead of an ESC
> prefix is essential for things like VIM keybindings. Bash and Readline
> have always dealt well with this to my knowledge, through the
> convert-meta option. What happens is that while VIM seems to properly
> recognize characters with an `eighth bit set' in UTF-8, Readline appears
> quite confused by it. All keybindings based on Meta break when using
> this setup, since most Meta compositions are seen as, e.g., two M-c
> M-<char> bytes, and the M-c binding always gets triggered, while the
> other doesn't seem to. I hope this can be fixed soon enough, otherwise
> moving to UTF-8 will have to wait.

I'm not sure I understand.  You have told readline to strip the eighth
bit and convert characters with that bit set to escape-prefixed key
sequences.  Why would you expect it not to do that?  Or did you turn
convert-meta off?

This is hard for me to test, because my Mac keyboard converts eight-bit
characters to escape-prefixed sequences automatically when told to use
the option key as a meta.  By default, though, I can do what you want
when I turn convert-meta off and explicitly use esc as the meta prefix.


``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
Chet Ramey, ITS, CWRU    address@hidden    http://tiswww.tis.cwru.edu/~chet/

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