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Re: [Texmacs-dev] In function "edit_dynamic_rep::make_hybrid": why "if (

From: Joris van der Hoeven
Subject: Re: [Texmacs-dev] In function "edit_dynamic_rep::make_hybrid": why "if (selection_active_small ())"?
Date: Thu, 3 Nov 2005 17:20:14 +0100
User-agent: Mutt/1.5.9i

On Thu, Nov 03, 2005 at 04:31:23PM +0100, Norbert Nemec wrote:
> I often wonder about the behavior of the "\" key that seems to have
> changed over the past few versions.
> In TeXmacs-, I read:
> ---------------------
> void
> edit_dynamic_rep::make_hybrid () {
>   tree t (HYBRID, "");
>   if (selection_active_small ())
>     t[0]= selection_get_cut ();
>   if (is_func (t, HYBRID, 1) && (t[0] != "") &&
>       (!(is_atomic (t[0]) && drd->contains (t[0]->label))))
>     t= tree (HYBRID, "", t[0]);
>   path p= end (t, path (0));
>   if (in_source ()) insert_tree (t, p);
>   else insert_tree (tree (INACTIVE, t), path (0, p));
>   set_message ("return: activate symbol or macro", "hybrid");
> }
> -------------------
> The first if-query seems to suggest, that it is intended that small
> selections are included inside the hybrid while larger selections are
> ignored. Effectively that means, that I can easily add markup to single
> lines, but not to multiple lines, even though many markup tags (e.g.
> <bf|...>) work very well even for multiple paragraphs.
> Is the "if (selection_active_small ())" necessary by principle or could
> it be relaxed?

It is not really "necessary", but significant modifications in the typesetter
would be needed in order to make it possible to deal with multi-paragraph 
Since one of my next projects for TeXmacs (next year) is to thoroughly rewrite
the typesetter, this change would be easier to make later on.

Best wishes, Joris

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