add "-C" format to hexdump

fixes bug #113 and satisfies a personal need at the same time.

output compares identically to util-linux version.  (with
exception of whitespace differences on last lines of output with
non-uniform length, which are neither fixed nor worsened by this
change.)

1 files changed, 2 insertions, 1 deletions

diff --git a/include/usage.h b/include/usage.h
index ab0bb4ce4..912a88f4e 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1087,13 +1087,14 @@
         "daemon:x:1:1:daemon:/usr/sbin:/bin/sh\n"
 
 #define hexdump_trivial_usage \
-        "[-[bcdefnosvx]] [OPTION] FILE"
+        "[-[bcCdefnosvx]] [OPTION] FILE"
 #define hexdump_full_usage \
         "The hexdump utility is a filter which displays the specified files,\n" \
         "or the standard input, if no files are specified, in a user specified\n" \
         "format\n" \
         "\t-b\t\tOne-byte octal display\n" \
         "\t-c\t\tOne-byte character display\n" \
+        "\t-C\t\tCanonical hex+ASCII, 16 bytes per line\n" \
         "\t-d\t\tTwo-byte decimal display\n" \
         "\t-e FORMAT STRING\n" \
         "\t-f FORMAT FILE\n" \