diff --git a/autotests/html/highlight.hex.html b/autotests/html/highlight.hex.html
new file mode 100644
--- /dev/null
+++ b/autotests/html/highlight.hex.html
@@ -0,0 +1,15 @@
+
+
+
+highlight.hex
+
+
+THIS IS INVALID
+:020000006428721
+:10000800803120007F08FD002700931D0C280D2853
+:0603D800890BEA29003444
+:020000040001F9
+:04000E0084EFFFDE9E
+:04000E0884EFFFDE9E
+:00000001FF
+
diff --git a/autotests/input/highlight.hex b/autotests/input/highlight.hex
new file mode 100644
--- /dev/null
+++ b/autotests/input/highlight.hex
@@ -0,0 +1,8 @@
+THIS IS INVALID
+:020000006428721
+:10000800803120007F08FD002700931D0C280D2853
+:0603D800890BEA29003444
+:020000040001F9
+:04000E0084EFFFDE9E
+:04000E0884EFFFDE9E
+:00000001FF
diff --git a/data/syntax/intelhex.xml b/data/syntax/intelhex.xml
new file mode 100644
--- /dev/null
+++ b/data/syntax/intelhex.xml
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+