1 files changed, 4 insertions, 1 deletions
diff --git a/userdiff.c b/userdiff.c
index 3a78fbf..bcae006 100644
--- a/userdiff.c
+++ b/userdiff.c
@@ -58,7 +58,10 @@ PATTERNS("java",
 	 "|[-+*/<>%&^|=!]="
 	 "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
 PATTERNS("matlab",
-	 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^%%[[:space:]].*$",
+	 /* Octave pattern is mostly the same as matlab, except that '%%%' and
+	  * '##' can also be used to begin code sections, in addition to '%%'
+	  * that is understood by both. */
+	 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^(%%%?|##)[[:space:]].*$",
 	 "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),
 PATTERNS("objc",
 	 /* Negate C statements that can look like functions */