From: Dmitry Gutov <dgutov@yandex.ru>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 20728@debbugs.gnu.org
Subject: bug#20728: 25.0.50; grep and grep-find templates should have a place holder for the --color argument
Date: Sun, 28 Jun 2015 22:02:21 +0300 [thread overview]
Message-ID: <559044BD.4030703@yandex.ru> (raw)
In-Reply-To: <83381b7vez.fsf@gnu.org>
On 06/28/2015 05:35 PM, Eli Zaretskii wrote:
>>> Isn't it the other way around: Windows wants 'always' (except when it
>>> doesn't, see below), while others want 'auto'?
>>
>> When will `always' not work for the others?
>
> I answered that below:
No: when will a given command's behavior on other operating systems be
wrong if it was just written to work on Windows (and thus uses either
`always' or nil, not `auto')?
>>> As to when you won't want 'always': it's when Grep is invoked as part
>>> pf a pipeline, where it's not the last part,
Do we have any such commands? If so, would it hurt them to have to bind
`grep-highlight-matches' to nil?
>>> or when the Lisp program
>>> that invokes it wants to interpret the results, as opposed to showing
>>> them to the user.
Again, any such command will need to bind `grep-highlight-matches' to
nil, to work on Windows. Or neutralize some other way the value `always'
that it gets set to automatically, on Windows and DOS.
>> I'd want `nil' in that case, right?
>
> In which case? And what do you mean by 'nil' in this context? We are
> talking about the value of the --color= Grep option, don't we?
In either case: when the pipeline ends with something other than Grep,
or when we'll process the output programmatically, and don't need the
ANSI codes.
I'm talking about the value of `grep-highlight-matches'.
>> And I'd have to specify it explicitly anyway, if I want
>> compatibility with Windows.
>
> You lost me.
See above.
>> So, why do we use `auto'?
>
> My guess would be: because it mostly does what we want, AUTOmatically:
> it produces SGR color sequences when Grep is run as a subprocess via a
> pty, and does not produce them when Grep's output is a pipe.
Do we even have Grep-related commands that use a pipeline that doesn't
end with Grep?
next prev parent reply other threads:[~2015-06-28 19:02 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 23:42 bug#20728: 25.0.50; grep and grep-find templates should have a place holder for the --color argument Dmitry Gutov
2015-06-04 2:43 ` Eli Zaretskii
2015-06-04 8:58 ` Dmitry Gutov
2015-06-04 15:01 ` Eli Zaretskii
2015-06-04 15:18 ` Dmitry Gutov
2015-06-04 15:34 ` Eli Zaretskii
2015-06-04 15:36 ` Dmitry Gutov
2015-06-04 15:39 ` Eli Zaretskii
2015-06-04 16:55 ` Dmitry Gutov
2015-06-04 17:16 ` Eli Zaretskii
2015-06-04 17:46 ` Dmitry Gutov
2015-06-04 19:23 ` Eli Zaretskii
2015-06-04 20:20 ` Dmitry Gutov
2015-06-05 6:58 ` Eli Zaretskii
2015-06-05 8:29 ` Dmitry Gutov
2015-06-05 8:59 ` Eli Zaretskii
2015-06-05 9:07 ` Dmitry Gutov
2015-06-05 9:23 ` Eli Zaretskii
2015-06-05 9:47 ` Dmitry Gutov
2015-06-05 22:17 ` Juri Linkov
2015-06-06 10:19 ` Dmitry Gutov
2015-06-06 22:04 ` Juri Linkov
2015-06-07 22:22 ` Dmitry Gutov
2015-06-09 23:32 ` Juri Linkov
2015-06-10 17:55 ` Dmitry Gutov
2015-06-10 23:49 ` Juri Linkov
2015-06-11 7:23 ` Dmitry Gutov
2015-06-11 23:20 ` Juri Linkov
2015-06-22 0:49 ` Dmitry Gutov
2015-06-22 22:33 ` Juri Linkov
2015-06-23 0:33 ` Dmitry Gutov
2015-06-27 21:11 ` Dmitry Gutov
2015-06-27 22:49 ` Juri Linkov
2015-06-28 1:22 ` Dmitry Gutov
2015-06-28 1:39 ` Dmitry Gutov
2015-06-28 2:42 ` Eli Zaretskii
2015-06-28 8:05 ` Dmitry Gutov
2015-06-28 14:35 ` Eli Zaretskii
2015-06-28 19:02 ` Dmitry Gutov [this message]
2015-06-28 20:28 ` Eli Zaretskii
2015-06-28 20:31 ` Dmitry Gutov
2015-06-29 2:36 ` Eli Zaretskii
2015-06-29 10:08 ` Dmitry Gutov
2015-06-29 14:49 ` Eli Zaretskii
2015-06-29 15:01 ` Dmitry Gutov
2015-06-29 15:26 ` Eli Zaretskii
2015-06-29 16:11 ` Dmitry Gutov
2015-06-29 16:24 ` Eli Zaretskii
2015-06-29 16:26 ` Dmitry Gutov
2015-07-11 13:58 ` Eli Zaretskii
2015-07-11 15:57 ` Dmitry Gutov
2015-06-29 10:05 ` Dmitry Gutov
2015-06-29 14:44 ` Eli Zaretskii
2015-06-29 14:50 ` Dmitry Gutov
2015-06-29 15:15 ` Eli Zaretskii
2015-06-04 22:50 ` Juri Linkov
2015-06-05 9:49 ` Dmitry Gutov
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