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Re: [Texmacs-dev] Patches: copy/paste and selection handling.

From: Norbert Nemec
Subject: Re: [Texmacs-dev] Patches: copy/paste and selection handling.
Date: Fri, 04 Dec 2009 00:24:16 +0000
User-agent: Thunderbird (X11/20090817)

Philippe Joyez wrote:
I was disappointed to realize that the handling of the selection in the
Qt-texmacs I compiled a few days ago is still not completely conforming to
standards. For instance, when I have an active selection, if I start typing
text or if I paste something, the selection is not replaced by the new text.
Instead, the selection is merely canceled and the text entered next to it.
Indeed, this is one detail that is still left to do in the selection mechanism of TeXmacs. It should not be too hard to implement - I don't know when I might get to it. It is not high priority for me, but I agree that it would be nice to have.

Also the "insert" key does not seem to toggle the usual insert/overwrite
mode, at least in my configuration.
I don't think TeXmacs has an "overwrite" mode at all. The problem may be already finding a proper definition for the behavior. All is easy while editing plain text, but what should happen to formatting information or any non-text elements when you "overwrite" them?

Personally, I find overwrite mode quite handy in text editors in plain ASCII, fixed-character width setting. I don't think I have ever used it in a variable-width font. It might be nice to have in preformatted environments within TeXmacs. Otherwise, I think it is not really worth the trouble.

Is this the intended behavior, or is there a configuration switch I missed
somewhere? If it is normal, would it be hard to change the code in order to
(at least as an option) delete any existing selection when something is
inserted from the keyboard or the clipboard?
I am not sure. Should be straighforward but it might be non-trivial to get the behavior "quite right". In my experience it takes a lot of tweaking until such a change has exactly the effect that you intend in all the possible different cases.

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