Let the user type the hyphen if he wants when searching

It happens that sometimes the hypen is actually "part of the word" like
in one-third, so if there's one- at the end of a line
and third at the beginning of the next, we should still match and not
force the user to type onethird, even we will also match onethird since
there's no way to know if "hyphen at end of line" is supposed to be part
of the word or not

BUGS: 418520