diff --git a/test-md/Makefile.1.md b/test-md/Makefile.1.md
index dd7a378d6..1bf6d2eac 100644
--- a/test-md/Makefile.1.md
+++ b/test-md/Makefile.1.md
@@ -1,4 +1,4 @@
-<!-- language: lang-none -->
+```
 #!/bin/make
 # 2000 makefile
 #
@@ -214,3 +214,4 @@ nuke: clobber
 
 install: all
 	${CAT} ${WINNERS} ${ALT_NAMES} > /dev/null
+```
diff --git a/test-md/Makefile.2.md b/test-md/Makefile.2.md
index a604321d2..5ba18f006 100644
--- a/test-md/Makefile.2.md
+++ b/test-md/Makefile.2.md
@@ -1,4 +1,4 @@
-<!-- language: lang-make -->
+```make
 #!/bin/make
 # 2000 makefile
 #
@@ -214,3 +214,4 @@ nuke: clobber
 
 install: all
 	${CAT} ${WINNERS} ${ALT_NAMES} > /dev/null
+```
diff --git a/test-md/foo.c.1.md b/test-md/foo.c.1.md
index 93aae7717..7b433bdcd 100644
--- a/test-md/foo.c.1.md
+++ b/test-md/foo.c.1.md
@@ -1,4 +1,4 @@
-<!-- language: lang-none -->
+```
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -102,3 +102,4 @@ int main( int argc, char *argv??(??) )
     eoj: exit( 0 );
 
 }
+```
diff --git a/test-md/foo.c.2.md b/test-md/foo.c.2.md
index 0d79327b0..f1a7002a0 100644
--- a/test-md/foo.c.2.md
+++ b/test-md/foo.c.2.md
@@ -1,4 +1,4 @@
-<!-- language: lang-c -->
+```c
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -102,3 +102,4 @@ int main( int argc, char *argv??(??) )
     eoj: exit( 0 );
 
 }
+```
diff --git a/test-md/foo.md b/test-md/foo.md
new file mode 100644
index 000000000..23c88c8b1
--- /dev/null
+++ b/test-md/foo.md
@@ -0,0 +1,8 @@
+```c
+#include <time.h>
+/* `foo` */
+char x0="`foo`";
+/* _foo_ */
+char x1="_foo_";
+/*foo*/
+```