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Re: bidi at startup
From: |
Eli Zaretskii |
Subject: |
Re: bidi at startup |
Date: |
Tue, 21 Jun 2011 20:13:50 +0300 |
> From: Stefan Monnier <address@hidden>
> Cc: Kenichi Handa <address@hidden>, address@hidden
> Date: Tue, 21 Jun 2011 11:12:12 -0400
>
> >> Is it used when we run emacs with -batch?
>
> That doesn't matter for preloading.
I think it does, because temacs is normally run with -batch.
> > I think in -batch mode Emacs should not reorder bidirectional text.
> > Mainly because if the underlying terminal is bidi-aware, it will
> > reorder it by itself, and if it isn't aware, most probably it doesn't
> > support the corresponding scripts anyway, and scripts that need
> > reordering will come out garbled.
>
> > So I think bidi-display-reordering should be set early during startup,
> > but only in interactive sessions, i.e. dynamically.
>
> As mentioned a few days ago in another thread, thinking in terms of
> "interactive/noninteractive" session is the wrong way to look at it.
Maybe in general, but not in this case, see below.
> Instead, you want to think about which terminal is used. E.g. think of
> the case of an Emacs server that did not daemonize: some terminals will
> be GUIs, others will be ttys
The device where Emacs displays is of no importance, as long as the
display engine supports it, because the bidi reordering works on all
of them.
> and there'll be one more which is just
> stdin/stdout. IIUC you're saying that the special initial terminal
> (bound to stdin/stdout) should not do bib-processing, which sounds fine.
No. stdout is not a display device in this context; a text terminal
is. When Emacs writes to stdout from `message' and such likes, the
result doesn't trigger redisplay, and thus doesn't invoke the
reordering. Reordering happens when the result of `message' is
inserted into some buffer, like the minibuffer, because that triggers
redisplay, which reorders.
What I was saying was that "emacs -batch" does not need reordering
services, because text we write to stdout should not be reordered.
Therefore, I think bidi-display-reordering should be initialized to
nil in xdisp.c, then set to t during startup if Emacs is invoked
interactively or as a daemon. Do you agree?
- Re: idn.el and confusables.txt, (continued)
- Re: idn.el and confusables.txt, Eli Zaretskii, 2011/06/17
- Re: idn.el and confusables.txt, Kenichi Handa, 2011/06/20
- Re: idn.el and confusables.txt, Eli Zaretskii, 2011/06/20
- Re: idn.el and confusables.txt, Kenichi Handa, 2011/06/20
- Re: idn.el and confusables.txt, Eli Zaretskii, 2011/06/21
- Re: idn.el and confusables.txt, Kenichi Handa, 2011/06/21
- Re: idn.el and confusables.txt, Eli Zaretskii, 2011/06/21
- Re: idn.el and confusables.txt, Kenichi Handa, 2011/06/21
- Re: bidi at startup (was: idn.el and confusables.txt), Eli Zaretskii, 2011/06/21
- Re: bidi at startup, Stefan Monnier, 2011/06/21
- Re: bidi at startup,
Eli Zaretskii <=
- Re: bidi at startup, Stefan Monnier, 2011/06/22