Don't aggressively coalesce across lines

Don't bother trying to coalesce over line boundaries when the
common region that contains the LF is less than 5 characters.
Its likely that the common region is actually a trailing "*/" or
"}" to close out the current statement.  We are usually better off
reporting this as common to the user.

Bug: issue 473
Change-Id: I93762d07d34eb71269ea6758ac3466a5351f8dbf
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed