lib/formulae/parse/formula_peg.txt in rubyfromexcel-0.0.9 vs lib/formulae/parse/formula_peg.txt in rubyfromexcel-0.0.10

@@ -31,10 +31,10 @@
 row_range                       := row `':' row
 area                            := reference `':' reference
 cell                            := reference
 row                              = /\$?\d+/
 column                           = /\$?[A-Za-z]{1,3}/
-reference                        = /\$?[A-Za-z]{1,3}\$?[0-9]+/
+reference                        = /\$?[A-Za-z]{1,3}\$?[0-9]+(?![0-9A-Za-z_])/
 boolean                          = boolean_true | boolean_false
 boolean_true                    := `'TRUE'
 boolean_false                   := `'FALSE'
 prefix                          := /[-+]/ thing
 space                            = `/[ \n]*/