~elementary-os/pantheon-calculator/deb-packaging-loki

--- a/src/Core/Scanner.vala

+++ b/src/Core/Scanner.vala

@@ -79,7 +79,7 @@

                         else

                             throw new SCANNER_ERROR.ALPHA_INVALID (_("'%s' is invalid."), t.content);

 

-                    } else if (t.token_type == TokenType.OPERATOR && t.content == "-") {

+                    } else if (t.token_type == TokenType.OPERATOR && (t.content == "-" || t.content == "−")) {

                         if (last_token == null || (last_token != null && last_token.token_type != TokenType.NUMBER &&

                         last_token.token_type != TokenType.P_RIGHT)) {

                             next_number_negative = true;