From: ZyX <kp-pav@yandex.ru>
To: Axel Beckert <abe@deuxchevaux.org>,
"zsh-users@zsh.org" <zsh-users@zsh.org>
Subject: Re: refering to 2nd from last history parameter?
Date: Thu, 22 Jan 2015 18:52:01 +0300 [thread overview]
Message-ID: <3006201421941921@web23g.yandex.ru> (raw)
In-Reply-To: <20150122134016.GV26664@sym.noone.org>
22.01.2015, 16:42, "Axel Beckert" <abe@deuxchevaux.org>:
> Hi,
>
> On Thu, Jan 22, 2015 at 12:18:19PM +0000, zzapper wrote:
>> I don't think it's possible
>>
>> ls !$ last parameter of previous command
>>
>> echo a b c d e f g h
>>
>> I don't think I can grab 'g' without counting left to right
>
> Interesting question.
>
> I would have expected that using negativ numbers would work (with
> CSH_JUNKIE_HISTORY enabled of course):
>
> % echo !:-2
>
> But this actually seems an abbreviation for
>
> % echo !:0-2
>
> despite this is not documented in the man page. (I may come up with a
> documentation patch for that later.)
It is documented:“x-y A range of words; x *defaults to 0*.”
>
> It though seems consistent with tcsh which behaves the same way.
>
> Despite I never thought about it so far, I'd use such a feature if I
> knew it exists. Would come in handy with many rsync/scp/cp/etc.
> command-lines to reuse the source argument if there were a bunch of
> dashed options before it.
>
> I wonder what would be a good syntax for such a feature as "-n"
> seems already taken. Maybe something "<n" as in e.g.
>
> % echo !:<2
>
> (And would we count from 0 or from 1, i.e. would "!:<0" or "!:<1" be a
> synonym for "!:$"? :-)
I would say that `!:<1` resulting in a second word counted from the end is rather unexpected.
>
> Kind regards, Axel
> --
> /~\ Plain Text Ribbon Campaign | Axel Beckert
> \ / Say No to HTML in E-Mail and News | abe@deuxchevaux.org (Mail)
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next prev parent reply other threads:[~2015-01-22 15:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 12:18 zzapper
2015-01-22 12:57 ` Peter Stephenson
2015-01-22 13:34 ` zzapper
2015-01-23 19:59 ` Wayne Davison
2015-01-26 12:05 ` zzapper
2015-01-26 12:16 ` Peter Stephenson
2015-01-26 13:17 ` Axel Beckert
2015-01-26 14:32 ` Peter Stephenson
2015-01-26 21:30 ` Axel Beckert
2015-01-22 13:40 ` Axel Beckert
2015-01-22 15:52 ` ZyX [this message]
2015-01-22 16:09 ` Axel Beckert
2015-01-22 17:17 ` Bart Schaefer
2015-01-22 17:51 ` zzapper
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