From 4e60bd39282651d83d7b431239225b1371419b21 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Thu, 25 Sep 2014 17:23:20 +0200
Subject: Exit command prompt if last character is deleted

---
 config.def.h |  1 +
 vis.c        | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/config.def.h b/config.def.h
index 145c1f1..876e4a4 100644
--- a/config.def.h
+++ b/config.def.h
@@ -456,6 +456,7 @@ static KeyBinding vis_mode_readline[] = {
 };
 
 static KeyBinding vis_mode_prompt[] = {
+	BACKSPACE(                     prompt_backspace,  s, NULL                  ),
 	{ { KEY(ENTER)              }, prompt_enter,    { NULL                   } },
 	{ { CONTROL('J')            }, prompt_enter,    { NULL                   } },
 	{ { KEY(UP)                 }, prompt_up,       { NULL                   } },
diff --git a/vis.c b/vis.c
index 4f59622..eaba6b8 100644
--- a/vis.c
+++ b/vis.c
@@ -422,6 +422,8 @@ static void prompt_enter(const Arg *arg);
 /* cycle through past user inputs */
 static void prompt_up(const Arg *arg);
 static void prompt_down(const Arg *arg);
+/* exit command mode if the last char is deleted */
+static void prompt_backspace(const Arg *arg);
 /* blocks to read 3 consecutive digits and inserts the corresponding byte value */
 static void insert_verbatim(const Arg *arg);
 /* scroll window content according to arg->i which can be either PAGE, PAGE_HALF,
@@ -875,6 +877,15 @@ static void prompt_down(const Arg *arg) {
 
 }
 
+static void prompt_backspace(const Arg *arg) {
+	char *cmd = editor_prompt_get(vis);
+	if (!cmd || !*cmd)
+		prompt_enter(NULL);
+	else
+		window_backspace_key(vis->win->win);
+	free(cmd);
+}
+
 static void insert_verbatim(const Arg *arg) {
 	int value = 0;
 	for (int i = 0; i < 3; i++) {
-- 
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