Log Message:
ugrep: updated to 5.1.1

ugrep v5.1.1

A minor update to fix a problem with POSIX lazy quantifier matching when \ 
combined with anchors, causing longer pattern matches than expected.

ugrep v5.1.0

a minor improvement of the regex syntax to allow escaped spaces
updated POSIX regex lazy quantifier matching in linear time using an advanced \ 
DFA transformation algorithm