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From:   Junio C Hamano <gitster@pobox.com>
To:     "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
Cc:     git@vger.kernel.org,
        Johannes Schindelin <johannes.schindelin@gmx.de>
Subject: Re: [PATCH 2/2] ci(github): also mark up compile errors
References: <pull.1253.git.1654774347.gitgitgadget@gmail.com>
        <19d6e34f038121b927cdfacc3c4ae5abd1791415.1654774347.git.gitgitgadget@gmail.com>
Date:   Fri, 10 Jun 2022 09:30:07 -0700
In-Reply-To: <19d6e34f038121b927cdfacc3c4ae5abd1791415.1654774347.git.gitgitgadget@gmail.com>
        (Johannes Schindelin via GitGitGadget's message of "Thu, 09 Jun 2022
        11:32:27 +0000")
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"Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
writes:

> +		sed 's/^\(\([^ ]*\):\([0-9]*\):\([0-9]*:\) \)\(error\|warning\): /::\5 file=\2 line=\3::\1/'

https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message

seems to use comma as field separator, not SP, for files and lines.
We'll see if they are equivalent without getting documented soon, as
I will be adding this to my tree for 'seen' today.  We should throw
a build failure in to see its effect ;-)