bug#16497: 24.3.50; `move-to-column' ignores invisible text at the beginning of the line, which create problems when using string-rectangle

[Stefan Monnier]

> `move-to-column' seems to go back to the first visibile character of
> the column, not the true first character.

Indeed.  And it's not the right choice in your case.  But I'm pretty
sure it is the right choice in other cases.

Maybe we should make move-to-column pay attention to stickiness so that
you con control where it stops by playing with text-properties's
stickiness (or overlay's insertion types).

But just changing the behavior from one side to the other will just fix
it in some cases and break it in others.


        Stefan