[PRISM] Fix unterminated regular expression error message

prism/templates/src/diagnostic.c.erb

@@ -306,7 +306,7 @@ static const pm_diagnostic_data_t diagnostic_messages[PM_DIAGNOSTIC_ID_MAX] = {
     [PM_ERR_REGEXP_NON_ESCAPED_MBC]             = { "/.../n has a non escaped non ASCII character in non ASCII-8BIT script: /%.*s/", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_REGEXP_INVALID_UNICODE_RANGE]       = { "invalid Unicode range: /%.*s/", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_REGEXP_UNKNOWN_OPTIONS]             = { "unknown regexp %s: %.*s", PM_ERROR_LEVEL_SYNTAX },
-    [PM_ERR_REGEXP_TERM]                        = { "unterminated regular expression; expected a closing delimiter", PM_ERROR_LEVEL_SYNTAX },
+    [PM_ERR_REGEXP_TERM]                        = { "unterminated regexp meets end of file; expected a closing delimiter", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_REGEXP_UTF8_CHAR_NON_UTF8_REGEXP]   = { "UTF-8 character in non UTF-8 regexp: /%s/", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_RESCUE_EXPRESSION]                  = { "expected a rescued expression", PM_ERROR_LEVEL_SYNTAX },
     [PM_ERR_RESCUE_MODIFIER_VALUE]              = { "expected a value after the `rescue` modifier", PM_ERROR_LEVEL_SYNTAX },

test/.excludes-prism/TestParse.rb

@@ -16,6 +16,5 @@ exclude(:test_string, "unknown")
 exclude(:test_truncated_source_line, "unknown")
 exclude(:test_unexpected_eof, "unknown")
 exclude(:test_unexpected_token_after_numeric, "unknown")
-exclude(:test_unterminated_regexp_error, "unknown")
 exclude(:test_unused_variable, "missing warning")
 exclude(:test_void_value_in_rhs, "unknown")