Add a second parameter to the rcs_diff hook, and avoid bloating memory reading in enormous commits.

1 files changed, 3 insertions, 1 deletions

diff --git a/IkiWiki/Plugin/darcs.pm b/IkiWiki/Plugin/darcs.pm
index 0f63b8807..cd4fcd0ff 100644
--- a/IkiWiki/Plugin/darcs.pm
+++ b/IkiWiki/Plugin/darcs.pm
@@ -373,11 +373,13 @@ sub rcs_recentchanges ($) {
 	return @ret;
 }
 
-sub rcs_diff ($) {
+sub rcs_diff ($;$) {
 	my $rev=shift;
+	my $maxlines=shift;
 	my @lines;
 	foreach my $line (silentsystem("darcs", "diff", "--match", "hash ".$rev)) {
 		if (@lines || $line=~/^diff/) {
+			last if defined $maxlines && @lines == $maxlines;
 			push @lines, $line."\n";
 		}
 	}