Re: [PATCH] t6022: Use -eq not = to test output of wc -l

From: Johannes Sixt <j.sixt@viscovery.net>
Date: Nov 16, 2010, 07:12 UTC
Message-ID: <4CE22EC2.7040603@viscovery.net>
In-Reply-To: <7vaalajkiq.fsf@alter.siamese.dyndns.org>

Am 11/15/2010 23:21, schrieb Junio C Hamano:

Show 18 quoted lines

> Brian Gernhardt <brian@gernhardtsoftware.com> writes:
> 
>> When comparing numbers such as "3" to "$(wc -l)", we should check for
>> numerical equality using -eq instead of string equality using = because
>> some implementations of wc output extra whitespace.
>>
>> Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
>> ---
>>  The alternative would be to use 3 = $(wc -l) (sans quotes), but other parts
>>  of the test used the -eq method.
> 
> ... which looks a tad ugly.
> 
> How about doing something like below after merging Jonathan's fb3340a
> (test-lib: introduce test_line_count to measure files, 2010-10-31) instead?
> 
> -- >8 --
> test_line_count: learn how to read from a pipe

I don't think that any of this (neither Jonathan's nor yours) has any benefit:

- The result is not easier to read.

- Nor are the lines of shell code shorter.

- If something in the pipe requires quoting, you need an extra level of
quotes.

- It doesn't save any messages or fix-ups during review: instead of "do
not quote!" we have to say "use test_line_count!".

Just my opinion.

-- Hannes