diff -upr libpipeline-1.2.2.orig/lib/pipeline.c libpipeline-1.2.2/lib/pipeline.c

--- libpipeline-1.2.2.orig/lib/pipeline.c	2012-03-04 18:43:07.000000000 +0100

+++ libpipeline-1.2.2/lib/pipeline.c	2012-11-30 14:46:14.395724863 +0100

@@ -2168,8 +2168,13 @@ const char *pipeline_readline (pipeline

 {

 	size_t buflen;

 	const char *buffer = get_line (p, &buflen);

-	if (buffer)

-		p->peek_offset -= buflen;

+	if (buffer) {

+		if (p->peek_offset > buflen) {

+			p->peek_offset -= buflen;

+		} else {

+			p->peek_offset = 0;

+		}

+	}

 	return buffer;

 }