Strip the line when computing the move detection minimum line length.
Review Request #4980 — Created Nov. 17, 2013 and submitted
Strip the line when computing the move detection minimum line length.
Move detection was considering the full length of a line when computing
line move thresholds, and that included whitespace. It now strips them,
so we don't have to deal with silly things like a massively indented
brace.
Unit tests pass.
