1 files changed, 34 insertions, 0 deletions
diff --git a/test/backtrack3.lm b/test/backtrack3.lm
new file mode 100644
index 0000000..8c6dfc3
--- /dev/null
+++ b/test/backtrack3.lm
@@ -0,0 +1,34 @@
+##### LM #####
+
+# Token names.
+lex
+	token number /[0-9]+/
+	token id /[a-z]+/
+	token string /'"' [^"]* '"'/
+	ignore ws / [ \t\n]+ /
+end
+
+def prefix [id]
+
+def choice1
+	[number number]
+|	[number]
+
+def choice2 
+	[string id]
+|	[number number]
+|	[id number]
+|	[number]
+
+def start 
+	[prefix choice1 choice2 string id id]
+	{
+		print_xml( match lhs "id 77 88 \"hello\" dude dude\n" )
+	}
+
+parse start[stdin]
+print( '\n' )
+##### IN #####
+id 77 88 "hello" dude dude
+##### EXP #####
+<start><prefix><id>id</id></prefix><choice1><number>77</number></choice1><choice2><number>88</number></choice2><string>"hello"</string><id>dude</id><id>dude</id></start>