From bf60ce7d75949a8d6d53473d3b2430c162f5f897 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Thu, 4 Sep 2014 22:44:53 +0200
Subject: Skip modes with common prefix if it does not match

---
 config.def.h | 4 ++++
 main.c       | 2 ++
 vis.h        | 1 +
 3 files changed, 7 insertions(+)

diff --git a/config.def.h b/config.def.h
index 1a5c3e3..b9547a1 100644
--- a/config.def.h
+++ b/config.def.h
@@ -629,11 +629,13 @@ static Mode vis_modes[] = {
 	},
 	[VIS_MODE_MARK] = {
 		.name = "MARK",
+		.common_prefix = true,
 		.parent = &vis_modes[VIS_MODE_BASIC],
 		.bindings = vis_marks,
 	},
 	[VIS_MODE_MARK_LINE] = {
 		.name = "MARK-LINE",
+		.common_prefix = true,
 		.parent = &vis_modes[VIS_MODE_MARK],
 		.bindings = vis_marks_line,
 	},
@@ -662,11 +664,13 @@ static Mode vis_modes[] = {
 	},
 	[VIS_MODE_REGISTER] = {
 		.name = "REGISTER",
+		.common_prefix = true,
 		.parent = &vis_modes[VIS_MODE_OPERATOR],
 		.bindings = vis_registers,
 	},
 	[VIS_MODE_MARK_SET] = {
 		.name = "MARK-SET",
+		.common_prefix = true,
 		.parent = &vis_modes[VIS_MODE_REGISTER],
 		.bindings = vis_marks_set,
 	},
diff --git a/main.c b/main.c
index d1c0b07..5e7240e 100644
--- a/main.c
+++ b/main.c
@@ -103,6 +103,8 @@ static bool keymatch(Key *key0, Key *key1) {
 
 static KeyBinding *keybinding(Mode *mode, Key *key0, Key *key1) {
 	for (; mode; mode = mode->parent) {
+		if (mode->common_prefix && !keymatch(key0, &mode->bindings->key[0]))
+			continue;
 		for (KeyBinding *kb = mode->bindings; kb && (kb->key[0].code || kb->key[0].str[0]); kb++) {
 			if (keymatch(key0, &kb->key[0]) && (!key1 || keymatch(key1, &kb->key[1])))
 				return kb;
diff --git a/vis.h b/vis.h
index c3f81c3..6d6972c 100644
--- a/vis.h
+++ b/vis.h
@@ -75,6 +75,7 @@ struct Mode {
 	Mode *parent;
 	KeyBinding *bindings;
 	const char *name;
+	bool common_prefix;
 	void (*enter)(void);
 	void (*leave)(void);
 	bool (*unknown)(Key *key0, Key *key1);        /* unknown key for this mode, return value determines whether parent modes will be checked */ 
-- 
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