From ae6b359109c2254ffa7e0add797c077c21780079 Mon Sep 17 00:00:00 2001
From: Naqua Darazaki <n.darazaki@gmail.com>
Date: Tue, 2 Jul 2024 13:54:11 +0200
Subject: [PATCH] Add ctrl + left/right arrow support to the REPL

Ctrl + left/right arrow would simply input "5D"/"5C" into the REPL
which was useless and confusing

With this change, it instead goes to the previous/next word which is
usually expected in readline-like interfaces
---
 src/mainclient/shell.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/mainclient/shell.c b/src/mainclient/shell.c
index 696fb352..ec93df69 100644
--- a/src/mainclient/shell.c
+++ b/src/mainclient/shell.c
@@ -867,7 +867,7 @@ static int line() {
     if (write_console((char *) gbl_prompt, gbl_plen) == -1) return -1;
     for (;;) {
         char c;
-        char seq[3];
+        char seq[5];
 
         int rc;
         do {
@@ -991,6 +991,20 @@ static int line() {
                                 default:
                                     break;
                             }
+                        } else if (seq[2] == ';') {
+                            if (read_console(seq + 3, 2) == -1) break;
+                            if (seq[3] == '5') {
+                                switch (seq[4]) {
+                                    case 'C': /* ctrl-right */
+                                        krightw();
+                                        break;
+                                    case 'D': /* ctrl-left */
+                                        kleftw();
+                                        break;
+                                    default:
+                                        break;
+                                }
+                            }
                         }
                     } else if (seq[0] == 'O') {
                         if (read_console(seq + 1, 1) == -1) break;