Add catv (separate applet instead of cat -v). Also cleanup cat.c comments,

the following of which (from cat.c) belongs in svn history instead of the
source code:

/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
 *
 * This is a new implementation of 'cat' which aims to be SUSv3 compliant.
 *
 * Changes from the previous implementation include:
 * 1) Multiple '-' args are accepted as required by SUSv3.  The previous
 *    implementation would close stdin and segfault on a subsequent '-'.
 * 2) The '-u' options is required by SUSv3.  Note that the specified
 *    behavior for '-u' is done by default, so all we need do is accept
 *    the option.
 */

2 files changed, 8 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index bbff772f0..ab2a6c5bf 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -63,6 +63,7 @@ APPLET_NOUSAGE(busybox, busybox, _BB_DIR_BIN, _BB_SUID_MAYBE)
 USE_BUNZIP2(APPLET(bzcat, bunzip2, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CAL(APPLET(cal, cal, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CAT(APPLET(cat, cat, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_CATV(APPLET(catv, catv, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_CHATTR(APPLET(chattr, chattr, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_CHGRP(APPLET(chgrp, chgrp, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_CHMOD(APPLET(chmod, chmod, _BB_DIR_BIN, _BB_SUID_NEVER))
diff --git a/include/usage.h b/include/usage.h
index 3f894c5b7..1d143e61e 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -136,6 +136,13 @@
         "$ cat /proc/uptime\n" \
         "110716.72 17.67"
 
+#define catv_trivial_usage \
+        "[-etv] [FILE]..."
+#define catv_full_usage \
+        "Display nonprinting characters as ^x or M-x.\n\n"\
+        "\t-e\tEnd each line with $\n" \
+        "\t-t\tShow tabs as ^I\n" \
+        "\t-v\tDon't use ^x or M-x escapes."
 #define chattr_trivial_usage \
         "[-R] [-+=AacDdijsStTu] [-v version] files..."
 #define chattr_full_usage \