Re: Same non-ASCII characters not 'equal'

[Sebastian Tennant <sebyte@smolny.plus.com>]

Quoth James Cloos <cloos@jhcloos.com>:
>>>>>> "Sebastian" == Sebastian Tennant <sebyte@smolny.plus.com> writes:
> Sebastian> Take 'child' and 'çocuk' for instance.  Because the (turkish-postfix)
> Sebastian> input method is inherited in the minibuffer you have to type 
> Sebastian> 'c h i 2 l d' to enter 'child' and a match is found, but when you
> Sebastian> enter 'çocuk' by typing 'c , o c u k', no match is found.  Could this
> Sebastian> be a bug even?
>
> Emacs versions other than the emacs-unicode-2 branch store each of the
> iso-8859-x glyphsets separately.  You are probably ending up with the
> 8859-1 (Latin 1) version of U+00E7 LATIN SMALL LETTER C WITH CEDILLA
> in the elisp; using the turkish-postfix input method most likely uses
> 8859-9 (Latin 5).  

I don't think this is the problem as I'm working with a unicode
terminal, and the encodings used for read and write are mule-utf-8

> One way to make latin1’s ç and latin5’s ç match is to use one or both
> of unify-8859-on-decoding-mode and/or unify-8859-on-encoding-mode.

I've tried setting these variables in the temporary buffer, without
success.

> Or, make sure you use the same encoding to enter the elisp that your
> users will use.  There are commands to convert the current buffer to
> a different encoding.  

Everything is mule-utf-8.

> Since I’ve moved almost exclusively to the unicode-2 branch, I don’t
> remember the specifics of the unify-8859 modes, but they are documented
> in info.

I'm not sure what you mean by unicode-2 branch

(emacs-version)
"GNU Emacs 21.4.1 (i486-pc-linux-gnu)
 of 2006-05-15 on trouble, modified by Debian"

> -JimC  (who has been caught by this issue before)

Thanks for your help Jim, but I'm still stuck :-(

I've managed to establish that the problem is caused by either the
read or write to disk, or both.  If the dictionary is defined in the
function, matches are found without a problem.  It's only when the
dictionary is populated from disk when matches of non-ASCII characters
fail.

Can you think of anything else I can try?

Perhaps a few variable checks in the code, to help diagnose the
problem?

Sebastian