Issue #19977: When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale),
:py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the
``surrogateescape`` error handler, instead of the ``strict`` error handler.
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index e9947e9..bb9f425 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1156,6 +1156,15 @@
encoding = _Py_StandardStreamEncoding;
errors = _Py_StandardStreamErrors;
if (!encoding || !errors) {
+ if (!errors) {
+ /* When the LC_CTYPE locale is the POSIX locale ("C locale"),
+ stdin and stdout use the surrogateescape error handler by
+ default, instead of the strict error handler. */
+ char *loc = setlocale(LC_CTYPE, NULL);
+ if (loc != NULL && strcmp(loc, "C") == 0)
+ errors = "surrogateescape";
+ }
+
pythonioencoding = Py_GETENV("PYTHONIOENCODING");
if (pythonioencoding) {
char *err;
@@ -1168,7 +1177,7 @@
if (err) {
*err = '\0';
err++;
- if (*err && !errors) {
+ if (*err && !_Py_StandardStreamErrors) {
errors = err;
}
}