Caleb Thompson <ca...@calebthompson.io> writes:

> On Fri, Jun 13, 2014 at 10:48:55AM -0700, Junio C Hamano wrote:
>> Caleb Thompson <ca...@calebthompson.io> writes:
>>
>> > diff --git a/t/t7507-commit-verbose.sh b/t/t7507-commit-verbose.sh
>> > index 35a4d06..402d6a1 100755
>> > --- a/t/t7507-commit-verbose.sh
>> > +++ b/t/t7507-commit-verbose.sh
>> > @@ -7,6 +7,10 @@ write_script check-for-diff <<-'EOF'
>> >            exec grep '^diff --git' "$1"
>> >  EOF
>> >
>> > +write_script check-for-no-diff <<-'EOF'
>> > +  exec grep -v '^diff --git' "$1"
>> > +EOF
>>
>> This lets grep show all lines that are not "diff --git" in the
>> input, and as usual grep exits success if it has any line in the
>> output.
>>
>>     $ grep -v '^diff --git' <<\EOF ; echo $?
>>     diff --git
>>     a
>>     EOF
>>     a
>>     0
>>     $ exit
>>
>> What are we testing, exactly?
>
> Good catch. It worked when I switched check-for-diff from
> check-for-no-diff, but I didn't try to make check-for-no-diff fail
> independently, so I apologize.

No need to apologize at all.  None of us (including this reviewer)
is perfect and that is why we review patches by each other.

> This version removes the the beginning of a line starting with
> "diff --git" from the string,...

Again, what are we testing, exactly?

We do not want to see "^diff --git" in the output file, in other
words, we want to make sure "^diff --git" does not appear in the
output.

So

        write_script check-for-no-diff <<-\EOF
        ! grep '^diff --git' "$@"
        EOF

should be the most natural way to express what we are testing, no?
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