Allowing atom names to contain digits. Fixes #30.

Makefile

 webopenccg/generated_openccg_parser.py: OpenCCG.ebnf
-	docker run --rm --detach --name web-openccg -v $$(pwd):/tmp web-openccg tatsu --generate-parser /tmp/$< --outfile /tmp/$@
+	docker run --rm --name web-openccg -v $$(pwd):/tmp web-openccg tatsu --generate-parser /tmp/$< --outfile /tmp/$@
 
 .PHONY: build
 build:

OpenCCG.ebnf

@@ -45,5 +45,5 @@ variable_type::str
     ;
 
 atom::str
-    = /[a-zA-Z\-\._]+/
+    = /[a-zA-Z\-\._0-9]+/
     ;

webopenccg/generated_openccg_parser.py

@@ -262,7 +262,7 @@ class OpenCCGParser(Parser):
 
     @tatsumasu('str')
     def _atom_(self):  # noqa
-        self._pattern(r'[a-zA-Z\-\._]+')
+        self._pattern(r'[a-zA-Z\-\._0-9]+')
 
 
 class OpenCCGSemantics(object):