K 10
svn:author
V 5
trasz
K 8
svn:date
V 27
2019-01-24T11:59:46.569190Z
K 7
svn:log
V 228
Make sh(1) support \u in PS1.  This removes one fork/exec on interactive
shell startup.

Reviewed by:	0mp (man page), jilles
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D18790

END