mailing-list for TeXmacs Users

[Chris Austin <address@hidden>]

If you write a symbol with both an upper index and a lower index, it is the 
one you write first that is sometimes omitted from the selection.  The reason 
for this seems to be that the index you write first, actually appears second 
in the TeXmacs source of the document.  For example, if you write the 
equivalent of p^i_k, writing the i before the k, it appears in the TeXmacs 
source as

<math|p<rsub|k><rsup|i>>

while if you write the k first, it appears in the TeXmacs source as

<math|p<rsup|i><rsub|k>>

If we now select p^i_k with the mouse, where we wrote the i first, and the 
purple cursor is either to the left or right of the k at the end of the 
selection sweep, then the i is omitted.  But if the purple cursor is either 
to the left or right of the i at the end of the selection sweep, or is 
vertical and to the right of the whole combination, then nothing is omitted.  
On the other hand, if the k was written first, then  the k is omitted if the 
purple cursor is to the left or right of the i at the end of the selection 
sweep.

So if you are selecting something that was written earlier, and you are not 
sure whether the superscript or subscript was written first, it is best to 
make sure the purple cursor ends up vertical, and to the right of the whole 
combination.

The above all assumes you make the selection sweep from left to right.  If 
you instead do the selection sweep from right to left, so the purple cursor 
ends up either to the left or the right of the p, then again, nothing is 
omitted.

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?