less: fix <tab><backspace> buglet

git-svn-id: svn://busybox.net/trunk/busybox@17121 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 5 insertions, 5 deletions

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')