bin/49533: tcsh commandline insert no longer working with tmux

[htodd%twofifty.com@localhost]

>Number:         49533
>Category:       bin
>Synopsis:       tcsh commandline insert no longer working with tmux
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 03 16:55:00 +0000 2015
>Originator:     Hisashi Todd Fujinaka
>Release:        NetBSD 7.99.3
>Organization:
None
>Environment:
	
	
System: NetBSD mara.i8u.org 7.99.3 NetBSD 7.99.3 (MARA) #2415: Sun Dec 28 09:24:21 PST 2014 htodd%mara.i8u.org@localhost:/usr/obj/amd64/sys/arch/amd64/compile/MARA amd64
Architecture: x86_64
Machine: amd64
>Description:
Using any commandline editing (tcsh, bash, etc) no longer allows inserting and
just overwrites characters being displayed. This is a serious usability issue.
	
>How-To-Repeat:
Type something on the commandline, go back into the middle of what you've 
typed, and then try to insert some characters.
	
>Fix:
Yes please.
	

>Unformatted: