From aa3dd7fd8f1b9409979af8263f06e45505326fc1 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Wed, 26 Sep 2012 15:48:57 +0200
Subject: libdraw: fix ^W corner case tick == 0 for enter()/eenter()

---
 sys/src/libdraw/eenter.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'sys/src/libdraw/eenter.c')

diff --git a/sys/src/libdraw/eenter.c b/sys/src/libdraw/eenter.c
index a3c60a881..9102d60c3 100644
--- a/sys/src/libdraw/eenter.c
+++ b/sys/src/libdraw/eenter.c
@@ -152,10 +152,12 @@ eenter(char *ask, char *buf, int len, Mouse *m)
 			}
 			if(k == Ketb){
 				while(tick > 0){
-					buf[--tick] = 0;
+					tick--;
 					if(tick == 0 || strchr("\t ", buf[tick-1]))
 						break;
 				}
+				if(n > tick)
+					memset(buf+tick, 0, n-tick);
 				n = tick;
 				break;
 			}
-- 
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