bug#17346: 24.4.50; Why is the goal column limited to C-n and C-p ?

[Stefan Monnier]

>> Another issue related to the one reported originally: 'C-l'
>> (recenter-top-bottom) resets the goal column.
>> Steps to reproduce, from "emacs -Q":
>> C-p C-p C-f C-n C-p
>> Note that the goal column (column 1) is honored by now.  Then do:
>> C-n C-l C-p
>> Note that the goal column has been (incorrectly) forgotten after typing 
>> 'C-l'.

I think it would be fine to make C-l preserve `temporary-goal-column'.
Currently, only next-line and previous-line do that, and this is
hardcoded in `line-move' and `line-move-visual'.

We could change that hardcoded list by replacing it with a symbol
property `preserve-temporary-goal-column' and then add that property to
recenter-top-bottom.


        Stefan