shortuser should stop before the first space character.
Examples:
"Foo Bar <foo.bar AT example DOT com>" -> "foo.bar"
(instead of "foo.bar AT example DOT com>" as it was before.)
"Foo Bar" -> "Foo"
3210 files updated, 0 files merged, 1 files removed, 0 files unresolvedsub/b not presentsub not present