From 14d1b5fbd009e48cb5cd1b5f4bee76680646b5f5 Mon Sep 17 00:00:00 2001
From: oga
Date: Sun, 18 May 2008 19:34:09 +0000
Subject: When we're cleaning out the lists in parse_config and conf_clear it's
 a lot simpler just to do while (entry = TAILQ_FIRST(head)) than to do a for
 () over the whole lot. Simpler, shorter and probably faster.

ok okan@
---
 parse.y | 54 +++++++++++++++++-------------------------------------
 1 file changed, 17 insertions(+), 37 deletions(-)

diff --git a/parse.y b/parse.y
index c2ae94c..aa17c4e 100644
--- a/parse.y
+++ b/parse.y
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.y,v 1.6 2008/04/29 20:17:28 simon Exp $ */
+/*	$OpenBSD: parse.y,v 1.7 2008/05/18 19:34:09 oga Exp $ */
 
 /*
  * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -466,28 +466,22 @@ popfile(void)
 void
 conf_clear(struct conf *c)
 {
-	struct autogroupwin	*ag, *agnext;
-	struct keybinding	*kb, *kbnext;
-	struct winmatch		*wm, *wmnext;
-	struct cmd		*cmd, *cmdnext;
-
-	for (cmd = TAILQ_FIRST(&c->cmdq); cmd != NULL; cmd = cmdnext) {
-		cmdnext = TAILQ_NEXT(cmd, entry);
+	struct autogroupwin	*ag;
+	struct keybinding	*kb;
+	struct winmatch		*wm;
+	struct cmd		*cmd;
 
+	while (cmd = TAILQ_FIRST(&c->cmdq)) {
 		TAILQ_REMOVE(&c->cmdq, cmd, entry);
 		free(cmd);
 	}
 
-	for (kb = TAILQ_FIRST(&c->keybindingq); kb != NULL; kb = kbnext) {
-		kbnext = TAILQ_NEXT(kb, entry);
-
+	while (kb = TAILQ_FIRST(&c->keybindingq)) {
 		TAILQ_REMOVE(&c->keybindingq, kb, entry);
 		free(kb);
 	}
 
-	for (ag = TAILQ_FIRST(&c->autogroupq); ag != NULL; ag = agnext) {
-		agnext = TAILQ_NEXT(ag, entry);
-
+	while (ag = TAILQ_FIRST(&c->autogroupq)) {
 		TAILQ_REMOVE(&c->autogroupq, ag, entry);
 		free(ag->class);
 		if (ag->name)
@@ -496,9 +490,7 @@ conf_clear(struct conf *c)
 		free(ag);
 	}
 
-	for (wm = TAILQ_FIRST(&c->ignoreq); wm != NULL; wm = wmnext) {
-		wmnext = TAILQ_NEXT(wm, entry);
-
+	while (wm = TAILQ_FIRST(&c->ignoreq)) {
 		TAILQ_REMOVE(&c->ignoreq, wm, entry);
 		free(wm);
 	}
@@ -534,43 +526,31 @@ parse_config(const char *filename, struct conf *xconf)
 		conf_clear(conf);
 	}
 	else {
-		struct autogroupwin	*ag, *agnext;
-		struct keybinding	*kb, *kbnext;
-		struct winmatch		*wm, *wmnext;
-		struct cmd		*cmd, *cmdnext;
+		struct autogroupwin	*ag;
+		struct keybinding	*kb;
+		struct winmatch		*wm;
+		struct cmd		*cmd;
 
 		conf_clear(xconf);
 
 		xconf->flags = conf->flags;
 
-		for (cmd = TAILQ_FIRST(&conf->cmdq); cmd != NULL;
-		    cmd = cmdnext) {
-			cmdnext = TAILQ_NEXT(cmd, entry);
-
+		while (cmd = TAILQ_FIRST(&conf->cmdq)) {
 			TAILQ_REMOVE(&conf->cmdq, cmd, entry);
 			TAILQ_INSERT_TAIL(&xconf->cmdq, cmd, entry);
 		}
 
-		for (kb = TAILQ_FIRST(&conf->keybindingq); kb != NULL;
-		    kb = kbnext) {
-			kbnext = TAILQ_NEXT(kb, entry);
-
+		while (kb = TAILQ_FIRST(&conf->keybindingq)) {
 			TAILQ_REMOVE(&conf->keybindingq, kb, entry);
 			TAILQ_INSERT_TAIL(&xconf->keybindingq, kb, entry);
 		}
 
-		for (ag = TAILQ_FIRST(&conf->autogroupq); ag != NULL;
-		    ag = agnext) {
-			agnext = TAILQ_NEXT(ag, entry);
-
+		while (ag = TAILQ_FIRST(&conf->autogroupq)) {
 			TAILQ_REMOVE(&conf->autogroupq, ag, entry);
 			TAILQ_INSERT_TAIL(&xconf->autogroupq, ag, entry);
 		}
 
-		for (wm = TAILQ_FIRST(&conf->ignoreq); wm != NULL;
-		    wm = wmnext) {
-			wmnext = TAILQ_NEXT(wm, entry);
-
+		while (wm = TAILQ_FIRST(&conf->ignoreq)) {
 			TAILQ_REMOVE(&conf->ignoreq, wm, entry);
 			TAILQ_INSERT_TAIL(&xconf->ignoreq, wm, entry);
 		}
-- 
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