From: "Stefan Monnier" <monnier+gnu/emacs@RUM.cs.yale.edu>
Cc: David.Kastrup@t-online.de, monnier+gnu/emacs@rum.cs.yale.edu,
emacs-devel@gnu.org
Subject: Re: Should invisible imply intangible?
Date: Fri, 15 Mar 2002 19:22:19 -0500 [thread overview]
Message-ID: <200203160022.g2G0MJ204725@rum.cs.yale.edu> (raw)
In-Reply-To: 200203150341.g2F3flZ06455@wijiji.santafe.edu
> isearch-open-invisible will call a user-supplied hook in order to make
> invisible texts appear when searching. Those images I use in my
> buffer effectively make the original text invisible (for example, I
> replace $\frac{\pi}{3}$ by an image for the formula), so I want
> isearch to "open" them while going through the buffer. isearch will,
> however, only call isearch-open-invisible if the text/overlay is
> marked as invisible, so that is what I do.
>
> It would make more sense to modify isearch-open-invisible so it can
> deal with these images in another way. The invisible property should
> override the display property and make the text it covers not appear,
> not as itself, not modified by a display property.
I'm not completely sure about that. After all, why would someone
put a `display' property on an `invisible' overlay if the `invisible'
property means that the `display' property will be ignored anyway ?
In the case of `display' properties, I agree that your point of view
might be acceptable, but in the case of `before-string' and `after-string'
it is clearly not so, because it is very common to use an overlay
with both the `before-string' and the `invisible' property in order
to replace a piece of text with another. In such a case we again end
up with `invisible' text which does have a screen representation so that
having point before or after the invisible text is user-visible
(just as is the case with ellipsis), which implies that we again shouldn't
prevent the user from placing point immediately after the invisible text.
I hope you're beginning to see what I meant when I said that it's
not easy to determine when a piece of `invisible' text really has
no effect on screen. Checking the invisibility-spec is not enough:
you also have to check the presence of a `before-string' or an
`after-string' or a `display' (although this last one might disappear
if you decide that its behavior should be changed) and maybe there
are other cases.
Stefan
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next prev parent reply other threads:[~2002-03-16 0:22 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-23 20:19 Should invisible imply intangible? Richard Stallman
2002-02-23 21:24 ` Paul Michael Reilly
2002-02-25 0:09 ` Richard Stallman
2002-02-25 5:10 ` Stefan Monnier
2002-02-26 20:13 ` Richard Stallman
2002-03-01 1:30 ` Stefan Monnier
2002-03-03 14:40 ` Richard Stallman
2002-03-03 17:11 ` Stefan Monnier
2002-03-04 23:41 ` Richard Stallman
2002-03-04 23:46 ` Stefan Monnier
2002-03-05 1:40 ` Stefan Monnier
2002-03-07 2:30 ` Richard Stallman
2002-03-04 23:41 ` Richard Stallman
2002-03-05 21:58 ` Richard Stallman
2002-03-05 23:04 ` Stefan Monnier
2002-03-05 23:34 ` Stefan Monnier
2002-03-09 20:03 ` Richard Stallman
2002-03-09 22:37 ` Stefan Monnier
2002-03-10 21:32 ` Richard Stallman
[not found] ` <200203102202.g2AM26q06798@rum.cs.yale.edu>
2002-03-11 19:06 ` Richard Stallman
2002-03-12 17:56 ` Stefan Monnier
2002-03-13 10:58 ` Richard Stallman
2002-03-13 11:19 ` David Kastrup
2002-03-15 3:41 ` Richard Stallman
2002-03-15 11:47 ` David Kastrup
2002-03-16 6:39 ` Richard Stallman
2002-03-16 11:58 ` David Kastrup
2002-03-18 9:06 ` Richard Stallman
2002-03-18 23:36 ` David Kastrup
2002-03-19 7:24 ` Eli Zaretskii
2002-03-19 11:12 ` David Kastrup
2002-03-16 0:22 ` Stefan Monnier [this message]
2002-03-16 0:56 ` Miles Bader
2002-03-16 0:59 ` Stefan Monnier
2002-03-16 1:25 ` David Kastrup
2002-03-17 10:06 ` Richard Stallman
2002-03-16 1:18 ` David Kastrup
2002-03-16 1:28 ` Stefan Monnier
2002-03-16 2:16 ` David Kastrup
2002-03-16 3:29 ` Miles Bader
2002-03-16 4:05 ` David Kastrup
2002-03-23 23:37 ` David Kastrup
2002-03-13 13:06 ` Stefan Monnier
2002-03-13 14:15 ` David Kastrup
2002-03-13 16:53 ` Stefan Monnier
2002-03-14 12:42 ` Richard Stallman
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