Update error message for invalid % at EOF

Author: kddnewton

config.yml

@@ -153,6 +153,7 @@ errors:
   - INVALID_NUMBER_UNDERSCORE_INNER
   - INVALID_NUMBER_UNDERSCORE_TRAILING
   - INVALID_PERCENT
+  - INVALID_PERCENT_EOF
   - INVALID_PRINTABLE_CHARACTER
   - INVALID_RETRY_AFTER_ELSE
   - INVALID_RETRY_AFTER_ENSURE

src/prism.c

@@ -11356,7 +11356,7 @@ parser_lex(pm_parser_t *parser) {
                     // operator because we don't want to move into the string
                     // lex mode unnecessarily.
                     if ((lex_state_beg_p(parser) || lex_state_arg_p(parser)) && (parser->current.end >= parser->end)) {
-                        pm_parser_err_current(parser, PM_ERR_INVALID_PERCENT);
+                        pm_parser_err_current(parser, PM_ERR_INVALID_PERCENT_EOF);
                         LEX(PM_TOKEN_PERCENT);
                     }
 

templates/src/diagnostic.c.erb

@@ -236,6 +236,7 @@ static const pm_diagnostic_data_t diagnostic_messages[PM_DIAGNOSTIC_ID_MAX] = {
     [PM_ERR_INVALID_MULTIBYTE_ESCAPE]           = { "invalid multibyte escape: /%.*s/", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_INVALID_PRINTABLE_CHARACTER]        = { "invalid character `%c`", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_INVALID_PERCENT]                    = { "unknown type of %string", PM_ERROR_LEVEL_SYNTAX },
+    [PM_ERR_INVALID_PERCENT_EOF]                = { "unterminated quoted string meets end of file", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_INVALID_RETRY_AFTER_ELSE]           = { "Invalid retry after else", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_INVALID_RETRY_AFTER_ENSURE]         = { "Invalid retry after ensure", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_INVALID_RETRY_WITHOUT_RESCUE]       = { "Invalid retry without rescue", PM_ERROR_LEVEL_SYNTAX },

test/prism/errors_test.rb

@@ -208,7 +208,7 @@ def test_missing_terminator_in_parentheses
 
     def test_unterminated_argument_expression
       assert_errors expression('a %'), 'a %', [
-        ["unknown type of %string", 2..3],
+        ["unterminated quoted string meets end of file", 2..3],
         ["unexpected end-of-input; expected an expression after the operator", 3..3],
         ["unexpected end-of-input, assuming it is closing the parent top level context", 3..3]
       ]