savannah: extend instead of removing selection

[slavazanko]

Original: ​http://savannah.gnu.org/bugs/?13711

Submitted by:	Oswald Buddenhagen <ossi>	Submitted on:	Sun 10 Jul 2005 12:08:41 PM UTC
Category:	Editor	Severity:	3 - Normal
Status:	None	Privacy:	Public
Assigned to:	None	Open/Closed:	Open
Release:	current (CVS or snapshot)	Operating System:	All

Discussion:

Sun 10 Jul 2005 12:08:41 PM UTC, original submission:

starting a selection after having moved clears the previous 
selection. i think the previous selection should be extended if the 
cursor is exactly at the beginning/end of the old selection.
of course this is arguable. maybe a (hidden) option should be 
added.