Issue #13748: Raw bytes literals can now be written with the `rb` prefix as well as `br`.
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
index c3b2f35..55f4313 100644
--- a/Parser/tokenizer.c
+++ b/Parser/tokenizer.c
@@ -1412,13 +1412,15 @@
/* Identifier (most frequent token!) */
nonascii = 0;
if (is_potential_identifier_start(c)) {
- /* Process b"", r"" and br"" */
- if (c == 'b' || c == 'B') {
- c = tok_nextc(tok);
- if (c == '"' || c == '\'')
- goto letter_quote;
- }
- if (c == 'r' || c == 'R') {
+ /* Process b"", r"", br"" and rb"" */
+ int saw_b = 0, saw_r = 0;
+ while (1) {
+ if (!saw_b && (c == 'b' || c == 'B'))
+ saw_b = 1;
+ else if (!saw_r && (c == 'r' || c == 'R'))
+ saw_r = 1;
+ else
+ break;
c = tok_nextc(tok);
if (c == '"' || c == '\'')
goto letter_quote;