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List:       busybox-cvs
Subject:    svn commit: trunk/busybox/miscutils
From:       vda () busybox ! net (vda at busybox ! net)
Date:       2006-12-31 19:23:32
Message-ID: 20061231192332.AFE52485AB () busybox ! net
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Author: vda
Date: 2006-12-31 11:23:31 -0800 (Sun, 31 Dec 2006)
New Revision: 17120

Log:
less: interpret backspace.
less is officially declared PAGER-capable! ;)
(this includes viewing of manpages)


Modified:
   trunk/busybox/miscutils/less.c


Changeset:
Modified: trunk/busybox/miscutils/less.c
===================================================================
--- trunk/busybox/miscutils/less.c	2006-12-31 19:07:23 UTC (rev 17119)
+++ trunk/busybox/miscutils/less.c	2006-12-31 19:23:31 UTC (rev 17120)
@@ -212,11 +212,21 @@
 				}
 			}
 			c = readbuf[readpos];
+			/* backspace? [need this for manpage display] */
+			if (c == '\x8' && linepos) {
+				readpos++; /* eat it */
+				/* We do not consider the case of <tab><bs> */
+				/* Anyone who has that is pure evil :) */
+				linepos--;
+				*p-- = '\0';
+				continue;
+			}
 			if (c == '\t')
 				linepos += (linepos^7) & 7;
 			linepos++;
 			if (linepos >= w)
 				break;
+			/* ok, we will eat this char */
 			readpos++;
 			if (c == '\n') { terminated = 1; break; }
 			/* NUL is substituted by '\n'! */
@@ -1175,6 +1185,9 @@
 {
 	int keypress;
 
+	/* TODO: -x: do not interpret backspace, -xx: tab also */
+	/* -xxx: newline also */
+	/* -w N: assume width N (-xxx -w 32: hex viewer of sorts) */
 	getopt32(argc, argv, "EMmN~");
 	argc -= optind;
 	argv += optind;


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