It is not default because it's an expensive option by nature, making the
search take 2-3 times as long.
PR: 17555
Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
track.
The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;
.\" $Id$
.\"
If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.
Approved by: bde