return @ret;
}
-sub rcs_diff ($) {
+sub rcs_diff ($;$) {
my $rev=shift;
+ my $maxlines=shift;
my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
chdir $config{srcdir}
exec("mtn", "diff", "--root=$config{mtnrootdir}", "-r", "p:".$sha1, "-r", $sha1) || error("mtn diff $sha1 failed to run");
}
- my (@lines) = <MTNDIFF>;
+ my @lines;
+ while (my $line=<MTNDIFF>) {
+ last if defined $maxlines && @lines == $maxlines;
+ push @lines, $line;
+ }
close MTNDIFF || debug("mtn diff $sha1 exited $?");