Subject: Re: [PATCH 1/2] test-lib: show missing prereq summary

From: Junio C Hamano <[email-masked]>
Date: Mon, 15 Nov 2021 09:53:10 -0800

Ævar Arnfjörð Bjarmason <[email-masked]> writes:

>> +if test -n "$missing_prereq"
>> +then
>> +	unique_missing_prereq=$(
>> +		echo $missing_prereq |
>> +		tr -s "," "\n" |
>> +		grep -v '^$' |
>> +		sort -u |
>> +		paste -s -d ',')
>
> What is paste? Some out-of-tree debugging utility?

https://pubs.opengroup.org/onlinepubs/9699919799/utilities/paste.html

Don't feel bad for not knowing it.  I usually do not use cut or paste
myself and I had to look it up the other day while reviewing the RFC
phase of this series.

I am not sure '\n' is a good idea from portability perspective.  I
thought I wrote '\012' in the illustration in my review?