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From: Junio C Hamano <gitster@pobox.com>
To: Johannes Sixt <j6t@kdbg.org>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 3/3] mergetool: use shell variable magic instead of `awk`
Date: Mon, 10 Jun 2019 10:21:31 -0700	[thread overview]
Message-ID: <xmqq7e9tnyp0.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <d6675b02918364736ec74db937481127ab7d8990.1560152205.git.j6t@kdbg.org> (Johannes Sixt's message of "Mon, 10 Jun 2019 10:59:00 +0200")

Johannes Sixt <j6t@kdbg.org> writes:

> +	# here, $IFS is just a LF
> +	for line in $f
> +	do
> +		mode=${line%% *}		# 1st word
> +		sha1=${line#"$mode "}
> +		sha1=${sha1%% *}		# 2nd word
> +		case "${line#$mode $sha1 }" in	# remainder
> +		'1	'*)
> +			base_mode=$mode
> +			;;
> +		'2	'*)
> +			local_mode=$mode local_sha1=$sha1
> +			;;
> +		'3	'*)
> +			remote_mode=$mode remote_sha1=$sha1
> +			;;
> +		esac
> +	done

OK.  $mode won't have any glob metacharacter, and there is only one
invocation of "ls-files -u", which is now two fewer processes ;-)

>  
>  	if is_submodule "$local_mode" || is_submodule "$remote_mode"
>  	then
>  		echo "Submodule merge conflict for '$MERGED':"
> -		local_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $2;}')
> -		remote_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $2;}')
>  		describe_file "$local_mode" "local" "$local_sha1"
>  		describe_file "$remote_mode" "remote" "$remote_sha1"
>  		resolve_submodule_merge

  reply	other threads:[~2019-06-10 17:21 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-10  8:58 [PATCH 0/3] Reduce number of processes spawned by git-mergetool Johannes Sixt
2019-06-10  8:58 ` [PATCH 1/3] t7610-mergetool: do not place pipelines headed by `yes` in subshells Johannes Sixt
2019-06-10  9:59   ` SZEDER Gábor
2019-06-10 17:23     ` Junio C Hamano
2019-06-10 17:56       ` SZEDER Gábor
2019-06-10 18:29     ` Johannes Schindelin
2019-06-10 18:57       ` SZEDER Gábor
2019-06-10  8:58 ` [PATCH 2/3] mergetool: dissect strings with shell variable magic instead of `expr` Johannes Sixt
2019-06-10 17:17   ` Junio C Hamano
2019-06-10 21:34     ` Johannes Sixt
2019-06-10  8:59 ` [PATCH 3/3] mergetool: use shell variable magic instead of `awk` Johannes Sixt
2019-06-10 17:21   ` Junio C Hamano [this message]
2019-06-10 22:01     ` Johannes Sixt
2019-06-12 16:33 ` [PATCH v2 0/4] Reduce number of processes spawned by git-mergetool Johannes Sixt
2019-06-12 16:33   ` [PATCH v2 1/4] t7610-mergetool: do not place pipelines headed by `yes` in subshells Johannes Sixt
2019-06-12 16:33   ` [PATCH v2 2/4] t7610-mergetool: use test_cmp instead of test $(cat file) = $txt Johannes Sixt
2019-06-12 16:33   ` [PATCH v2 3/4] mergetool: dissect strings with shell variable magic instead of `expr` Johannes Sixt
2019-06-12 16:33   ` [PATCH v2 4/4] mergetool: use shell variable magic instead of `awk` Johannes Sixt

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