From d8257ec1f490f80b5d168def3cb4e36d969fe526 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Wed, 16 Sep 2015 20:29:31 -0700
Subject: linenoise: Ctrl-X extended commands.

* linenoise/linenoise.c (edit): Handle the Ctrl-X
key by setting a temporary flag. This sets the framework for
commands prefixed by Ctrl-X.
---
 linenoise/linenoise.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index 2a6173a4..515e775d 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -1012,7 +1012,7 @@ static void edit_delete_prev_word(lino_t *l) {
  * The function returns the length of the current buffer. */
 static int edit(lino_t *l, const char *prompt)
 {
-    int verbatim = 0;
+    int verbatim = 0, extended = 0;
 
     /* Populate the linenoise state that we pass to functions implementing
      * specific editing functionalities. */
@@ -1062,6 +1062,18 @@ static int edit(lino_t *l, const char *prompt)
             continue;
         }
 
+        if (extended) {
+            extended = 0;
+
+            switch (c) {
+            default:
+                generate_beep(l);
+                break;
+            }
+            continue;
+        }
+
+
         /* Only autocomplete when the callback is set. It returns < 0 when
          * there was an error reading from fd. Otherwise it will return the
          * character that should be handled next. */
@@ -1207,6 +1219,9 @@ static int edit(lino_t *l, const char *prompt)
         case CTL('V'): /* insert next char verbatim */
             verbatim = 1;
             break;
+        case CTL('X'):
+            extended = 1;
+            continue;
         case CTL('K'): /* delete from current to end of line. */
             l->data[l->dpos] = '\0';
             l->dlen = l->dpos;
-- 
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