* [PATCH] hexdump: automatically use -C when called as hd
@ 2020-06-23 0:14 Chris Hofstaedtler
2020-06-23 11:17 ` Sami Kerola
2020-06-24 14:41 ` Karel Zak
0 siblings, 2 replies; 4+ messages in thread
From: Chris Hofstaedtler @ 2020-06-23 0:14 UTC (permalink / raw)
To: util-linux
When invoking hexdump as hd enable the "Canonical" format to by
default, implying the -C option.
This is historic behaviour on Debian and apparently also on FreeBSD.
Some Debian users have asked for this to be restored, after Debian
switched to util-linux' hexdump and hd.
Signed-off-by: Chris Hofstaedtler <zeha@debian.org>
---
text-utils/hexdump.1 | 3 +++
text-utils/hexdump.c | 7 +++++++
2 files changed, 10 insertions(+)
diff --git a/text-utils/hexdump.1 b/text-utils/hexdump.1
index eb508f6d4..80a7c0f0d 100644
--- a/text-utils/hexdump.1
+++ b/text-utils/hexdump.1
@@ -67,6 +67,9 @@ by the same sixteen bytes in
format enclosed in
.RB ' | '
characters.
+Invoking the program as
+.B hd
+implies this option.
.TP
\fB\-d\fR, \fB\-\-two\-bytes\-decimal\fR
\fITwo-byte decimal display\fR. Display the input offset in hexadecimal,
diff --git a/text-utils/hexdump.c b/text-utils/hexdump.c
index cbd593e5f..ce83c9d83 100644
--- a/text-utils/hexdump.c
+++ b/text-utils/hexdump.c
@@ -82,6 +82,13 @@ parse_args(int argc, char **argv, struct hexdump *hex)
{NULL, no_argument, NULL, 0}
};
+ if (!strcmp(program_invocation_short_name, "hd")) {
+ /* Canonical format */
+ add_fmt("\"%08.8_Ax\n\"", hex);
+ add_fmt("\"%08.8_ax \" 8/1 \"%02x \" \" \" 8/1 \"%02x \" ", hex);
+ add_fmt("\" |\" 16/1 \"%_p\" \"|\\n\"", hex);
+ }
+
while ((ch = getopt_long(argc, argv, "bcCde:f:L::n:os:vxhV", longopts, NULL)) != -1) {
switch (ch) {
case 'b':
--
2.27.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] hexdump: automatically use -C when called as hd
2020-06-23 0:14 [PATCH] hexdump: automatically use -C when called as hd Chris Hofstaedtler
@ 2020-06-23 11:17 ` Sami Kerola
2020-06-23 17:06 ` Chris Hofstaedtler
2020-06-24 14:41 ` Karel Zak
1 sibling, 1 reply; 4+ messages in thread
From: Sami Kerola @ 2020-06-23 11:17 UTC (permalink / raw)
To: Chris Hofstaedtler; +Cc: util-linux
On Tue, 23 Jun 2020 at 01:15, Chris Hofstaedtler <zeha@debian.org> wrote:
>
> When invoking hexdump as hd enable the "Canonical" format to by
> default, implying the -C option.
>
> This is historic behaviour on Debian and apparently also on FreeBSD.
> Some Debian users have asked for this to be restored, after Debian
> switched to util-linux' hexdump and hd.
Wouldn't it make more sense to add an alias to a global profile?
alias hd='hexdump -C'
--
Sami Kerola
http://www.iki.fi/kerolasa/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] hexdump: automatically use -C when called as hd
2020-06-23 11:17 ` Sami Kerola
@ 2020-06-23 17:06 ` Chris Hofstaedtler
0 siblings, 0 replies; 4+ messages in thread
From: Chris Hofstaedtler @ 2020-06-23 17:06 UTC (permalink / raw)
To: kerolasa; +Cc: util-linux
* Sami Kerola <kerolasa@iki.fi> [200623 13:17]:
> On Tue, 23 Jun 2020 at 01:15, Chris Hofstaedtler <zeha@debian.org> wrote:
> >
> > When invoking hexdump as hd enable the "Canonical" format to by
> > default, implying the -C option.
> >
> > This is historic behaviour on Debian and apparently also on FreeBSD.
> > Some Debian users have asked for this to be restored, after Debian
> > switched to util-linux' hexdump and hd.
>
> Wouldn't it make more sense to add an alias to a global profile?
>
> alias hd='hexdump -C'
That's not scalable on Debian given the number of shells we ship.
Also, util-linux already has a number of binaries that modify their
behaviour depending on the name they are invoked as.
FreeBSD has this here:
https://github.com/freebsd/freebsd/blame/master/usr.bin/hexdump/hexsyntax.c#L59
And supports it for over 24 years; I believe Debian shipped with
this support since basically forever, too.
Chris
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] hexdump: automatically use -C when called as hd
2020-06-23 0:14 [PATCH] hexdump: automatically use -C when called as hd Chris Hofstaedtler
2020-06-23 11:17 ` Sami Kerola
@ 2020-06-24 14:41 ` Karel Zak
1 sibling, 0 replies; 4+ messages in thread
From: Karel Zak @ 2020-06-24 14:41 UTC (permalink / raw)
To: Chris Hofstaedtler; +Cc: util-linux
On Tue, Jun 23, 2020 at 12:14:30AM +0000, Chris Hofstaedtler wrote:
> When invoking hexdump as hd enable the "Canonical" format to by
> default, implying the -C option.
Well, I personally prefer aliases too, but ...
> This is historic behaviour on Debian and apparently also on FreeBSD.
> Some Debian users have asked for this to be restored, after Debian
> switched to util-linux' hexdump and hd.
if BSD implements it 24 years ago than it's probably good idea to
follow this manner to make util-linux more portable.
Merged to the "next" branch (it's too late for v2.36).
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-06-23 0:14 [PATCH] hexdump: automatically use -C when called as hd Chris Hofstaedtler
2020-06-23 11:17 ` Sami Kerola
2020-06-23 17:06 ` Chris Hofstaedtler
2020-06-24 14:41 ` Karel Zak
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