Re: [PATCH v2 02/23] contrib/subtree: Add command from-submodule

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Paul Campbell <pcampbell@xxxxxxxxxxx> writes:

> @@ -721,4 +722,31 @@ cmd_push()
>  	fi
>  }
>  
> +cmd_from-submodule()
> +{

I know contrib/subtree does not work with anything other than bash,
and bash may accept this as a valid function name, but if you can
avoid it easily I would prefer not to see a non-POSIX construct like
this in my tree, even in contrib/ part:

  http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_230

because people often reference random parts of the tree and mimick
what existing code does.

> +	ensure_clean
> +
> +	local submodule_sha=$(git submodule status $prefix | cut -d ' ' -f 2)

Is $prefix guaranteed not to have any $IFS whitespaces?

> +	# Remove references to submodule.
> +	git config --remove-section submodule.$prefix
> +	git config --file .gitmodules --remove-section submodule.$prefix
> +	git add .gitmodules
> +
> +	# Move submodule aside.
> +	local tmp_repo="$(mktemp -d /tmp/git-subtree.XXXXX)"

Doesn't "git subtree" honor TMPDIR?  Not complaining, but being
curious.

> +	rm -r $tmp_repo
> +	mv $prefix $tmp_repo
> +	git rm $prefix

Is $prefix guaranteed not to have any $IFS whitespaces?

> +
> +	# Commit changes.
> +	git commit -m "Remove '$prefix/' submodule"
> +
> +	# subtree add from submodule repo.
> +	cmd_add_repository $tmp_repo HEAD
> +
> +	# Remove submodule repo.
> +	rm -rf $tmp_repo
> +}
> +
>  "cmd_$command" "$@"
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