From: Kenichi Handa <handa@m17n.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-bidi@gnu.org, emacs-devel@gnu.org
Subject: Re: Treatment of LRE,RLE,LRO,RLO,PDF,LRM,RLM
Date: Mon, 01 Nov 2010 20:16:57 +0900 [thread overview]
Message-ID: <tl7sjzluwd2.fsf@m17n.org> (raw)
In-Reply-To: <E1PCr8f-0003bZ-UC@fencepost.gnu.org> (message from Eli Zaretskii on Mon, 01 Nov 2010 05:57:17 -0400)
In article <E1PCr8f-0003bZ-UC@fencepost.gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:
> > Char-table to control displaying of glyphless characters.
> > Each element, if non-nil, is an ASCII acronym string (displayed in a box)
> > or one of these symbols:
> > hexa-code: display with hexadecimal character code in a box
> ^^^^^^^^^
> Suggest to name this "hex-code" instead.
As Google search found much more pages of "hex code" than
"hexa code", ok, I'll change the name..
> > empty-box: display with an empty box
> > thin-space: display with 1-pixel width space
> > zero-width: don't display
> >
> > It has one extra slot to control the display of a character for which
> > no font is found. The value of the slot is `hexa-code' or `empty-box'.
> > The default is `empty-box'.
> What will happen on a TTY?
Ah, I forgot to mention about that. At first, empty-box,
hexa-code, and acronym are displayed by using a new face
glyphless-char which is defined as this.
(defface glyphless-char
'((((type tty)) :inherit underline)
(t :height 0.6))
...)
And, for tty, as it's impossible to do the same thing as
graphic terminal, the current code does this:
thin-space: same as empty-box
hexa-code: display "U+XX", "U+XXXX", "U+XXXXXX" ,
"E+XXXXXX" depends on the character code (the last
one is for a character of code >= #x110000).
acronym: surround an acronym by "[" and "]" as this:
"[ZWNJ]", "[LRE]"
At the moment, that is hardcoded in the function
produce_glyphless_glyph of term.c.
And, for tty, `no-font' means a character not encodable by
the terminal coding system.
> > glyphless-char-control is a variable defined in `characters.el'.
> ^^^^^^^^^^^^^^^^^^^^^^
> Suggest to name this "glyphless-char-display-control".
I thought that name was too long, but if people prefer it, I
don't mind renaming to it.
---
Kenichi Handa
handa@m17n.org
next prev parent reply other threads:[~2010-11-01 11:16 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tl7hbis1xop.fsf@m17n.org>
[not found] ` <AANLkTinrGPzGquxPmfigvZLzGbids39yU942sfwKGMYk@mail.gmail.com>
2010-08-19 2:49 ` [emacs-bidi] Treatment of LRE,RLE,LRO,RLO,PDF,LRM,RLM Kenichi Handa
2010-11-01 8:15 ` Kenichi Handa
2010-11-01 9:57 ` Eli Zaretskii
2010-11-01 11:16 ` Kenichi Handa [this message]
2010-11-13 13:51 ` [emacs-bidi] " Eli Zaretskii
2010-11-17 5:58 ` Kenichi Handa
2010-11-17 7:14 ` Kenichi Handa
2010-11-17 12:21 ` Eli Zaretskii
2010-11-17 19:20 ` Eli Zaretskii
2010-11-13 13:44 ` Eli Zaretskii
2010-11-13 14:07 ` Eli Zaretskii
2010-11-17 3:57 ` Kenichi Handa
2010-11-17 12:26 ` Eli Zaretskii
2010-11-17 12:55 ` Andreas Schwab
2010-11-17 13:24 ` Stefan Monnier
2010-11-18 20:07 ` Eli Zaretskii
2010-11-17 17:54 ` Eli Zaretskii
2010-11-17 23:59 ` Stefan Monnier
2010-11-18 20:04 ` Eli Zaretskii
2010-11-18 22:15 ` Stefan Monnier
2010-11-19 11:31 ` Eli Zaretskii
2010-11-20 15:06 ` Eli Zaretskii
2010-11-19 9:53 ` Andreas Schwab
2010-11-19 11:31 ` Eli Zaretskii
2010-11-19 11:47 ` Andreas Schwab
2010-11-17 19:39 ` Eli Zaretskii
2010-11-26 12:20 ` Eli Zaretskii
2010-11-26 12:29 ` Kenichi Handa
2010-11-27 8:42 ` Eli Zaretskii
2010-11-29 6:35 ` Kenichi Handa
2010-11-29 18:06 ` Stefan Monnier
2010-11-20 14:38 ` Eli Zaretskii
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