bpo-42819, readline: Disable bracketed paste (GH-24108) (GH-24545)3.9

(cherry picked from commit 755f3c1521b422bc2177013d289f5439975fdc4f)

Co-authored-by: Dustin Rodrigues <dust.rod@gmail.com>

Co-authored-by: Dustin Rodrigues <dust.rod@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/Modules/readline.c b/Modules/readline.c
index 12d6cc78e38..1e74f997b07 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -146,6 +146,26 @@ decode(const char *s)
 }
 
 
+/*
+Explicitly disable bracketed paste in the interactive interpreter, even if it's
+set in the inputrc, is enabled by default (eg GNU Readline 8.1), or a user calls
+readline.read_init_file(). The Python REPL has not implemented bracketed
+paste support. Also, bracketed mode writes the "\x1b[?2004h" escape sequence
+into stdout which causes test failures in applications that don't support it.
+It can still be explicitly enabled by calling readline.parse_and_bind("set
+enable-bracketed-paste on"). See bpo-42819 for more details.
+
+This should be removed if bracketed paste mode is implemented (bpo-39820).
+*/
+
+static void
+disable_bracketed_paste(void)
+{
+    if (!using_libedit_emulation) {
+        rl_variable_bind ("enable-bracketed-paste", "off");
+    }
+}
+
 /* Exported function to send one line to readline's init file parser */
 
 static PyObject *
@@ -192,6 +212,7 @@ read_init_file(PyObject *self, PyObject *args)
         errno = rl_read_init_file(NULL);
     if (errno)
         return PyErr_SetFromErrno(PyExc_OSError);
+    disable_bracketed_paste();
     Py_RETURN_NONE;
 }
 
@@ -1152,6 +1173,8 @@ setup_readline(readlinestate *mod_state)
     else
         rl_initialize();
 
+    disable_bracketed_paste();
+
     RESTORE_LOCALE(saved_locale)
     return 0;
 }