mailing-list for TeXmacs Users

[Chris Austin <address@hidden>]

I am also using TeXmacs 1.0.7.10.  I have also noticed that part of a 
selection that appears to be selected, is sometimes not actually selected, 
which you find out when you paste the selection somewhere.  For me it 
happened most often with integral signs, but I have found that if I extend 
the selection a bit further into the blank space to the left of the integral 
sign, I do get the integral sign.

With the integral sign, there is a visual clue to this: if the integral sign 
is really selected, then the red selection box extends fully to the left of 
the pale blue selection box; while if the red selection box encloses the 
integral sign, but the integral sign is not really selected, the pale blue 
selection box extends typically about a millimetre, (in my netbook), further 
to the left than the red selection box.

A practical problem that sometimes arises when you are trying to extend the 
red selection box fully to the left end of the pale blue selection box, is 
that TeXmacs is sometimes "over-eager" to extend the selection over the whole 
of what it thinks is a "logical unit".  You try to extend the red selection 
box that extra millimetre to the left, and suddenly the red selection box 
shoots outwards to the right as well, selecting a large piece of the equation 
that you did not want to select.

I would like to suggest that the behaviour where TeXmacs automatically 
extends a selection over a "logical unit", for example automatically 
extending the red selection box to include a matching right parenthesis, 
should only occur when you press Shift while dragging the selection box, 
because when manipulating an equation, it is often very useful to be able to 
select just a left parenthesis and the start of what follows it, but not 
everything up to and including the matching right parenthesis.  In 1.0.7.10 I 
have tried to turn off the "snap the selection over a logical unit" behaviour 
by changing the settings of Edit | Preferences | Mathematics | Context aids 
and Edit | Preferences | Mathematics | Semantics, but I have not found a way 
to do it.

In general, I would like to say that I think TeXmacs is a really wonderful 
program that I make very heavy use of, and I hope your forthcoming TeXmacs 
meeting is a great success.

On Saturday 26 November 2011 19:34:03 Lukasz Stafiniak wrote:

> Since I switched to TeXmacs 1.0.7.10 (sorry for being lazy about
> installing latest versions), selection that visually marks the whole
> expression with an upper index, often does not in fact include the
> upper index. I find it annoying, I'd like the selection to actually
> include the upper index in such cases (rather than correcting it the
> other way round, i.e. making the visual marking omit the index). Any
> thoughts?