Casefold variable names.

Author: F Saad

src/metamodels/cgpm_schema/grammar.y

@@ -44,6 +44,7 @@ given_opt(some)     ::= K_GIVEN vars(vars).
 
 vars(one)           ::= var(var).
 vars(many)          ::= vars(vars) T_COMMA var(var).
+
 var(name)           ::= L_NAME(var).
 
 stattype(s)         ::= L_NAME(st).

src/metamodels/cgpm_schema/parse.py

@@ -144,9 +144,9 @@ def p_given_opt_some(self, vars):           return vars
 
     def p_vars_one(self, var):                  return [var]
     def p_vars_many(self, vars, var):           vars.append(var); return vars
-    def p_var_name(self, var):                  return var
+    def p_var_name(self, var):                  return casefold(var)
 
-    def p_stattype_s(self, st):                   return st
+    def p_stattype_s(self, st):                 return st
 
     def p_param_opt_none(self):                 return []
     def p_param_opt_some(self, ps):             return ps