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Re: modify-syntax-entry and UTF8?
From: |
Geoffrey Alan Washburn |
Subject: |
Re: modify-syntax-entry and UTF8? |
Date: |
Wed, 23 May 2007 11:09:22 -0400 |
User-agent: |
Thunderbird 2.0.0.4pre (X11/20070522) |
James Cloos wrote:
"Geoffrey" == Geoffrey Alan Washburn <address@hidden> writes:
Geoffrey> No, what I wrote is exactly what I meant, unless the author of
Geoffrey> the TeX-input method incorrectly defined \langle and \rangle.
Ah. That does put a different spin on things.
And in fact, the UCS has expanded since that was written, and characters
were added for exactly TeX's \langle and \rlangle (and a few others in
latin-ltx.el which currently point to CJK characters instead of math chars).
latin-ltx.el should be updated to use ⟨ U+27E8 MATHEMATICAL LEFT ANGLE
BRACKET for \langle and ⟩ U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET for \rangle.
Ah, that is good to know. Is there any straightforward way to override
this in my .emacs file?
What does C-uC-x= output when point is on the characters in your
(modify-syntax-entry) calls and when point is on one of the characters
you are trying to match in the buffer you are editing? What are the
mode and coding-system of the buffer you are editing? What is the
coding-system of the .el file?
So when using the correct glyphs I get
character: ⟨ (10216, #o23750, #x27e8)
preferred charset: unicode (Unicode (ISO10646))
code point: 0x27E8
syntax: (⟩ which means: open, matches ⟩
buffer code: #xE2 #x9F #xA8
file code: #xE2 #x9F #xA8 (encoded by coding system utf-8-unix)
display: no font available
...
and
character: ⟩ (10217, #o23751, #x27e9)
preferred charset: unicode (Unicode (ISO10646))
code point: 0x27E9
syntax: )⟨ which means: close, matches ⟨
buffer code: #xE2 #x9F #xA9
file code: #xE2 #x9F #xA9 (encoded by coding system utf-8-unix)
display: no font available
...
which as I understand it means that they should already be treated as
matching delimiters.
However, if create an empty scratch buffer and I move the cursor on top
of either of the glyphs they become highlighted, but with the face that
is used for matched delimiters rather than the face mismatch/unmatched
delimiters. Adding both glyphs to an empty buffer in correctly and
incorrectly matching permutations gives the same behavior.
So I am inclined to believe Stefan's hypothesis that modify-syntax-entry
is working correctly here and instead whatever code actually interprets
the syntax table or performs the actual adjustment to the faces for
highlighting has a bug of some sort.
I'm also somewhat curious that emacs tells me that no font is available
for these glyphs, but Thunderbird seems to be able to locate a font that
can be used to display them.
- modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/21
- Re: modify-syntax-entry and UTF8?, James Cloos, 2007/05/21
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/22
- Re: modify-syntax-entry and UTF8?, James Cloos, 2007/05/22
- Re: modify-syntax-entry and UTF8?,
Geoffrey Alan Washburn <=
- Re: modify-syntax-entry and UTF8?, Stefan Monnier, 2007/05/23
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Miles Bader, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Miles Bader, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/25
- Re: modify-syntax-entry and UTF8?, James Cloos, 2007/05/25
- Re: modify-syntax-entry and UTF8?, Geoffrey Alan Washburn, 2007/05/28
- highlights of parentheses in lisp-interaction-mode (was: Re: modify-syntax-entry and UTF8?), James Cloos, 2007/05/29