1 files changed, 29 insertions, 0 deletions
diff --git a/test/backtrack1.lm b/test/backtrack1.lm
new file mode 100644
index 0000000..76f3705
--- /dev/null
+++ b/test/backtrack1.lm
@@ -0,0 +1,29 @@
+##### LM #####
+# Token names.
+
+lex
+	literal `+ `*
+	token number /[0-9]+/
+	ignore ws / [ \t\n]+ /
+end
+
+def F
+	[number `+]
+|	[number]
+|	[F `* number]
+
+def E
+	[E `+ F]
+|	[F]
+
+def start 
+	[E]
+
+parse S: start[ stdin ]
+R: start = match S ~ 9 + 9
+print_xml( R )
+print( '\n' )
+##### IN #####
+9 + 9
+##### EXP #####
+<start><E><E><F><number>9</number></F></E><_literal_0001>+</_literal_0001><F><number>9</number></F></E></start>