Issue #19884: readline: Disable the meta modifier key if stdout is not a
terminal to not write the ANSI sequence "\033[1034h" into stdout. This sequence
is used on some terminal (ex: TERM=xterm-256color") to enable support of 8 bit
characters.
diff --git a/Misc/NEWS b/Misc/NEWS
index a57a0e4..a6c1416 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -13,6 +13,11 @@
 Library
 -------
 
+- Issue #19884: readline: Disable the meta modifier key if stdout is not
+  a terminal to not write the ANSI sequence "\033[1034h" into stdout. This
+  sequence is used on some terminal (ex: TERM=xterm-256color") to enable
+  support of 8 bit characters.
+
 - Issue #22017: Correct reference counting errror in the initialization of the
   _warnings module.