From: Juri Linkov <juri@linkov.net>
To: Dmitry Gutov <dgutov@yandex.ru>
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: Wed, 10 Jun 2015 02:32:35 +0300 [thread overview]
Message-ID: <87fv608nl8.fsf@mail.linkov.net> (raw)
In-Reply-To: <5574C427.3070007@yandex.ru> (Dmitry Gutov's message of "Mon, 8 Jun 2015 01:22:31 +0300")
> No problem. Could you explain what those filters are, the ones the comment
> says zgrep puts into output?
These are pipe filters. You can see how complex is the command line
constructed in /bin/zgrep
> I meant template substitution, like in grep-expand-template.
>
> Not sure what to do about grep-default-command, but if leaving it as-is is
> not an option, we can reasonably decide that the grep-command was the
> symbol at the beginning of the previous command.
Then you want two additional placeholders: for the command name and options?
>> But I see no problem with
>> both zrgrep and the code where you want to parse the output programmatically,
>> to remember the computed command lines in defvar variables such as
>> zgrep-find-command, zgrep-find-template, etc. to not compute them every
>> time the command is called.
>
> Again, why have zgrep-find-template, when grep-find-template could have
> a (new) placeholder for grep-command? Do zgrep and grep take
> different options?
In an older version of /bin/zgrep I see the text "OPTIONs are the same as for 'grep'."
I don't know about other versions.
>> When parameters don't vary between command calls (as regexps and files do)
>> then I think it's better to prepare them in the command line templates.
>
> Since grep-command and grep-highlight-matches can vary between calls,
> should we make a template placeholder for them?
There are only two possible values for grep-highlight-matches
whereas the number of possible values of the current placeholders
for regexps and filenames is infinite.
I think the rule should be the following: placeholders are needed only for
parameters provided by users, but for internal implementation parameters
it's enough to pre-compute command lines (and cache them).
PS: Somehow reminds me of endless discussions about distinctions
between `error' and `user-error' :)
next prev parent reply other threads:[~2015-06-09 23:32 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 [this message]
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
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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