while (!scanner_eof(s) && !scanner_eol(s) && scanner_peek(s) != '\"') {
if (scanner_chr(s, '\\')) {
uint8_t o;
+ size_t start_pos = s->pos;
if (scanner_chr(s, '\\')) scanner_buf_append(s, '\\');
else if (scanner_chr(s, 'n')) scanner_buf_append(s, '\n');
else if (scanner_chr(s, 't')) scanner_buf_append(s, '\t');
else if (scanner_chr(s, 'f')) scanner_buf_append(s, '\f');
else if (scanner_chr(s, 'v')) scanner_buf_append(s, '\v');
else if (scanner_chr(s, 'e')) scanner_buf_append(s, '\033');
- else if (scanner_oct(s, &o)) {
- if (is_valid_char((char) o)) {
- scanner_buf_append(s, (char) o);
- } else {
- scanner_warn_with_code(s,
- XKB_WARNING_INVALID_ESCAPE_SEQUENCE,
- "invalid octal escape sequence: \\%o", o);
- }
- }
+ else if (scanner_oct(s, &o) && is_valid_char((char) o))
+ scanner_buf_append(s, (char) o);
+ else if (s->pos > start_pos)
+ scanner_warn_with_code(s,
+ XKB_WARNING_INVALID_ESCAPE_SEQUENCE,
+ "invalid octal escape sequence (%.*s) in string literal",
+ (int) (s->pos - start_pos + 1), &s->s[start_pos - 1]);
+ /* Ignore. */
else {
- // TODO: display actual sequence! See: scanner_peek(s).
- // require escaping any potential control character
- scanner_warn_with_code(s, XKB_WARNING_UNKNOWN_CHAR_ESCAPE_SEQUENCE,
- "unknown escape sequence in string literal");
+ scanner_warn_with_code(s,
+ XKB_WARNING_UNKNOWN_CHAR_ESCAPE_SEQUENCE,
+ "unknown escape sequence (\\%c) in string literal",
+ scanner_peek(s));
/* Ignore. */
}
} else {