Re: [PATCH v4 3/3] config: add '--show-origin' option to print the origin of a config value

[Jeff King <peff@peff.net>]

On Mon, Feb 15, 2016 at 02:18:18PM -0800, Junio C Hamano wrote:

> larsxschneider@gmail.com writes:
> 
> > +test_expect_success 'set up custom config file' '
> > +	CUSTOM_CONFIG_FILE=$(printf "file\twith\ttabs.conf") &&
> > +	cat >"$CUSTOM_CONFIG_FILE" <<-\EOF
> > +		[user]
> > +			custom = true
> > +	EOF
> > +'
> > +
> > +test_expect_success '--show-origin escape special file name characters' '
> > +	cat >expect <<-\EOF &&
> > +		file:"file\twith\ttabs.conf"	user.custom=true
> > +	EOF
> > +	git config --file "$CUSTOM_CONFIG_FILE" --show-origin --list >output &&
> > +	test_cmp expect output
> > +'
> 
> Do we really need to use a file with such a name?
> 
> An existing test t3300 tells me that a test that uses a path with a
> tab needs to be skipped on FAT/NTFS.  If your goal is to make sure
> dquote is exercised, can't we just do with a path with a SP in it or
> something?

It has to trigger quote_c_style(). You can see the complete set of
quoted characters in quote.c:sq_lookup, but space is not one of them.
Probably double-quote or backslash is the best bet, as the rest are all
control characters.

-Peff