From 853aaa06f24c98191a44a38eedd4ec2a0e63d3eb Mon Sep 17 00:00:00 2001
From: Yonatan Goldschmidt
Date: Sat, 14 Dec 2019 23:42:03 +0200
Subject: lib/mp-readline: Add word-based move/delete EMACS key sequences.

This commit adds backward-word, backward-kill-word, forward-word,
forward-kill-word sequences for the REPL, with bindings to Alt+F, Alt+B,
Alt+D and Alt+Backspace respectively.  It is disabled by default and can be
enabled via MICROPY_REPL_EMACS_WORDS_MOVE.

Further enabling MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE adds extra bindings
for these new sequences: Ctrl+Right, Ctrl+Left and Ctrl+W.

The features are enabled on unix micropython-coverage and micropython-dev.
---
 py/mpconfig.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'py')

diff --git a/py/mpconfig.h b/py/mpconfig.h
index d6f4d9232..2c4169070 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -570,6 +570,21 @@
 #define MICROPY_REPL_EMACS_KEYS (0)
 #endif
 
+// Whether to include emacs-style word movement/kill readline behavior in REPL.
+// This adds Alt+F, Alt+B, Alt+D and Alt+Backspace for forward-word, backward-word, forward-kill-word
+// and backward-kill-word, respectively.
+#ifndef MICROPY_REPL_EMACS_WORDS_MOVE
+#define MICROPY_REPL_EMACS_WORDS_MOVE (0)
+#endif
+
+// Whether to include extra convenience keys for word movement/kill in readline REPL.
+// This adds Ctrl+Right, Ctrl+Left and Ctrl+W for forward-word, backward-word and backward-kill-word
+// respectively. Ctrl+Delete is not implemented because it's a very different escape sequence.
+// Depends on MICROPY_REPL_EMACS_WORDS_MOVE.
+#ifndef MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE
+#define MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE (0)
+#endif
+
 // Whether to implement auto-indent in REPL
 #ifndef MICROPY_REPL_AUTO_INDENT
 #define MICROPY_REPL_AUTO_INDENT (0)
-- 
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