From: Junio C Hamano <gitster@pobox.com>
To: Johannes Sixt <j6t@kdbg.org>
Cc: Michael J Gruber <git@drmicha.warpmail.net>,
git@vger.kernel.org, Joachim Schmitz <jojo@schmitz-digital.de>
Subject: Re: [RFC/PATCH 3/4v2] test-lib: provide lazy TIME_COMMAND prereq
Date: Tue, 16 Oct 2012 12:34:08 -0700 [thread overview]
Message-ID: <7v8vb6rz2n.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <507DB39C.3080005@kdbg.org> (Johannes Sixt's message of "Tue, 16 Oct 2012 21:21:00 +0200")
Johannes Sixt <j6t@kdbg.org> writes:
> Am 16.10.2012 17:07, schrieb Michael J Gruber:
>> Some test want to use the time command (not the shell builtin) and test
>> for its availability at /usr/bin/time.
>>
>> Provide a lazy prereq TIME_COMMAND which tests for $TEST_COMMAND_PATH,
>> which can be set from config.mak. It defaults to /usr/bin/time.
>
> This avoids the builtin:
>
> command time $that_command
>
> It works for bash, ksh, zsh, and dash (where the latter doesn't have it
> as builtin).
"command time" works but I think that is because it is not a
built-in ;-)
Here is what I read in bash(1):
command [-pVv] command [arg ...] Run command with args
suppressing the normal shell function lookup. Only
builtin commands or commands found in the PATH are
executed.
Taken together with this from "COMMAND EXECUTION":
If the command name contains no slashes, the shell attempts
to locate it. If there exists a shell function by that name,
that function is invoked as described above in FUNCTIONS. If
the name does not match a function, the shell searches for it
in the list of shell builtins. If a match is found, that
builtin is invoked.
If the name is neither a shell function nor a builtin, and
contains no slashes, bash searches each element of the PATH
for a directory containing an executable file by that name.
I suspect "command printf 'a b c\n'" would not use $HOME/bin/printf
even when I have $HOME/bin early in my $PATH (nor /usr/bin/printf
for that matter).
next prev parent reply other threads:[~2012-10-16 19:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-15 10:56 t3302-notes-index-expensive.sh and t3419-rebase-patch-id.sh need time in /usr/bin Joachim Schmitz
2012-10-16 11:39 ` [PATCH 0/4] Allow different time commands Michael J Gruber
2012-10-16 11:39 ` [PATCH 1/4] t3419-rebase-patch-id: heed USR_BIN_TIME prereq Michael J Gruber
2012-10-16 16:32 ` Junio C Hamano
2012-10-16 11:39 ` [PATCH 2/4] test-lib: allow variable export from lazy prereq tests Michael J Gruber
2012-10-16 16:16 ` Junio C Hamano
2012-10-16 11:39 ` [RFC/PATCH 3/4] test-lib: provide lazy TIME_COMMAND prereq Michael J Gruber
2012-10-16 14:13 ` Joachim Schmitz
2012-10-16 15:06 ` Michael J Gruber
2012-10-16 15:11 ` Joachim Schmitz
2012-10-16 15:07 ` [RFC/PATCH 3/4v2] " Michael J Gruber
2012-10-16 16:28 ` Andreas Schwab
2012-10-16 18:28 ` Stefano Lattarini
2012-10-16 19:21 ` Johannes Sixt
2012-10-16 19:34 ` Junio C Hamano [this message]
2012-10-16 16:41 ` [RFC/PATCH 3/4] " Junio C Hamano
2012-10-16 11:39 ` [PATCH 4/4] t3302,t3419: use the " Michael J Gruber
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