lib/mp-readline: Add emacs-style control characters for cursor movement.
Disabled by default. Adds 108 bytes to Thumb2 arch when enabled.
diff --git a/py/mpconfig.h b/py/mpconfig.h
index 9f0e909..a345e5f 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -303,6 +303,11 @@
#define MICROPY_HELPER_REPL (0)
#endif
+// Whether to include emacs-style readline behavior in REPL
+#ifndef MICROPY_REPL_EMACS_KEYS
+#define MICROPY_REPL_EMACS_KEYS (1)
+#endif
+
// Whether port requires event-driven REPL functions
#ifndef MICROPY_REPL_EVENT_DRIVEN
#define MICROPY_REPL_EVENT_DRIVEN (0)