From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Sun, 31 Dec 2006 19:36:01 +0000 (-0000)
Subject: less: fix <tab><backspace> buglet
X-Git-Tag: 1_4_0~142
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=50ddabc8592a528c84f236467f4febe9795e2d6b;p=oweals%2Fbusybox.git

less: fix <tab><backspace> buglet
---

diff --git a/miscutils/less.c b/miscutils/less.c
index ae936c2fb..20da02208 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -212,13 +212,13 @@ static void read_lines(void)
 				}
 			}
 			c = readbuf[readpos];
-			/* backspace? [need this for manpage display] */
-			if (c == '\x8' && linepos) {
+			/* backspace? [needed for manpages] */
+			/* <tab><bs> is (a) insane and */
+			/* (b) harder to do correctly, so we refuse to do it */
+			if (c == '\x8' && linepos && p[-1] != '\t') {
 				readpos++; /* eat it */
-				/* We do not consider the case of <tab><bs> */
-				/* Anyone who has that is pure evil :) */
 				linepos--;
-				*p-- = '\0';
+				*--p = '\0';
 				continue;
 			}
 			if (c == '\t')