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Re: case-table functions clobbering extra slots

From: Kenichi Handa
Subject: Re: case-table functions clobbering extra slots
Date: Wed, 2 Feb 2005 11:57:51 +0900 (JST)
User-agent: SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/21.3.50 (sparc-sun-solaris2.6) MULE/5.0 (SAKAKI)

In article <address@hidden>, Richard Stallman <address@hidden> writes:

>     Downcase of dotted-I is dotted-i (`i'), but, in
>     lang. env. other than Turkish, upcase of dotted-i must be
>     dotless-I (`I').  So we need
>       (set-downcase-syntax dotted-I dotted-i table)

> Ok, if we need them both, please add both.

I've just installed these changes:

o lisp/case-table.el
    Add set-upcase-syntax and set-downcase-syntax, modify
    th other function to maintain upcase table.

o lisp/international/characters.el, lisp/international/latin-5.el:

o src/casefiddle.c:
    Enable casify_object to change characters of different
    byte size.  Fix casify_region to work on such a case

o src/insdel.c
    Fix bugs of replace_range_2.

Now, upcase/downcase commands on the above characters seems
to work correctly.

But, I found case-fold searching and regexp matching doesn't
work as expected.  For instance, searching for DOTLESS-i
ignores `i' and `I' but find I-WITH-DOT-ABOVE.  On the other
hand, all of the following returns nil:
  (staring-match "DOTLESS-i" "i")
  (staring-match "DOTLESS-i" "I")
  (staring-match "DOTLESS-i" "I-WITH-DOT-ABOVE")

It seems that this behaviour is because compile-pattern is
given a downcase table and search_buffer is given a canon
table and an equiv table, but I still don't understand
the underlying logic of this difference.

Ken'ichi HANDA

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