From 75a851e927dd7f8e562b0fd35490783b44966c9f Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Wed, 14 Jul 2010 11:08:42 -0700
Subject: [PATCH] acme: fix off by one in editcmd, pointer comparison in getch,
 nextc

R=r
http://codereview.appspot.com/868046
---
 src/cmd/acme/edit.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/cmd/acme/edit.c b/src/cmd/acme/edit.c
index f1a7d67f..4495bf69 100644
--- a/src/cmd/acme/edit.c
+++ b/src/cmd/acme/edit.c
@@ -164,7 +164,7 @@ editcmd(Text *ct, Rune *r, uint n)
 		free(cmdstartp);
 	cmdstartp = runemalloc(n+2);
 	runemove(cmdstartp, r, n);
-	if(r[n] != '\n')
+	if(r[n-1] != '\n')
 		cmdstartp[n++] = '\n';
 	cmdstartp[n] = '\0';
 	cmdendp = cmdstartp+n;
@@ -195,7 +195,7 @@ editcmd(Text *ct, Rune *r, uint n)
 int
 getch(void)
 {
-	if(*cmdp == *cmdendp)
+	if(cmdp == cmdendp)
 		return -1;
 	return *cmdp++;
 }
@@ -203,7 +203,7 @@ getch(void)
 int
 nextc(void)
 {
-	if(*cmdp == *cmdendp)
+	if(cmdp == cmdendp)
 		return -1;
 	return *cmdp;
 }