commit d80f4265db63a1692455abb8d1c77d0d72151bbb
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Mon Jun 07 17:36:19 2021 -0700
committer GitHub <noreply@github.com> Mon Jun 07 17:36:19 2021 -0700
tree 1fe4bedf5ad99ac02eec2d8db3cee274f3b51c3a
parent 8524e32d77b6741cdd7f947c009b10b54c6529b8

fix: use unambiguous punction in 'invalid escape sequence' message (GH-26582)

(cherry picked from commit ffd87b7093109c279caf8e3ca060f408a102388a)

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

Parser/string_parser.c

diff --git a/Parser/string_parser.c b/Parser/string_parser.c
index b919633..fa41a36 100644
--- a/Parser/string_parser.c
+++ b/Parser/string_parser.c
@@ -12,7 +12,7 @@ static int
 warn_invalid_escape_sequence(Parser *p, unsigned char first_invalid_escape_char, Token *t)
 {
     PyObject *msg =
-        PyUnicode_FromFormat("invalid escape sequence \\%c", first_invalid_escape_char);
+        PyUnicode_FromFormat("invalid escape sequence '\\%c'", first_invalid_escape_char);
     if (msg == NULL) {
         return -1;
     }
@@ -27,7 +27,7 @@ warn_invalid_escape_sequence(Parser *p, unsigned char first_invalid_escape_char,
                since _PyPegen_raise_error uses p->tokens[p->fill - 1] for the
                error location, if p->known_err_token is not set. */
             p->known_err_token = t;
-            RAISE_SYNTAX_ERROR("invalid escape sequence \\%c", first_invalid_escape_char);
+            RAISE_SYNTAX_ERROR("invalid escape sequence '\\%c'", first_invalid_escape_char);
         }
         Py_DECREF(msg);
         return -1;