Re: [PATCH libgpiod v2 2/4] tools: tests: use "$@" instead of $*

[Kent Gibson <warthog618@gmail.com>]

On Mon, May 27, 2024 at 08:57:32PM +0800, Kent Gibson wrote:
> On Mon, May 27, 2024 at 02:51:52PM +0200, Bartosz Golaszewski wrote:
> > On Mon, May 27, 2024 at 2:44 PM Kent Gibson <warthog618@gmail.com> wrote:
> > >
> > > On Mon, May 27, 2024 at 02:02:34PM +0200, Bartosz Golaszewski wrote:
> > > > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > > >
> > > > $@ does not break up quoted arguments which is what we want in all cases
> > > > in the bash test-suite. Use it instead of $*. While at it: prevent
> > > > globbing with double quotes but allow variable expansion.
> > > >
> > > > Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > > > ---
> > > >  tools/gpio-tools-test.bash | 12 ++++++------
> > > >  1 file changed, 6 insertions(+), 6 deletions(-)
> > > >
> > > > diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
> > > > index abb2f5d..dde26b4 100755
> > > > --- a/tools/gpio-tools-test.bash
> > > > +++ b/tools/gpio-tools-test.bash
> > > > @@ -27,10 +27,10 @@ GPIOSIM_APP_NAME="gpio-tools-test"
> > > >  MIN_KERNEL_VERSION="5.17.4"
> > > >  MIN_SHUNIT_VERSION="2.1.8"
> > > >
> > > > -# Run the command in $* and fail the test if the command succeeds.
> > > > +# Run the command in $@ and fail the test if the command succeeds.
> > > >  assert_fail() {
> > > > -     $* || return 0
> > > > -     fail " '$*': command did not fail as expected"
> > > > +     "$@" || return 0
> > > > +     fail " '$@': command did not fail as expected"
> > > >  }
> > > >
> > >
> > > Ironically, shellcheck doesn't like the '$@' in the fail string[1], so you
> > > should use $* there.
> > >
> > > It also doesn't like looping on find results in patch 4[2], though that
> > > is not related to your change, so leave it and I'll fix it later?
> > >
> >
> > What does it want here? This looks correct to me? Should we do "$(find...)"?
> >
>
> Refer to the referenced link - it is worried about filenames containing
> whitespace.
> Not sure what the best option is here - I am only just looking into it...
>

How about using this for the cleanup:

		echo 0 > "$DEVPATH/live"
		find "$DEVPATH" -type d -name hog -exec rmdir '{}' '+'
		find "$DEVPATH" -type d -name "line*" -exec rmdir '{}' '+'
		find "$DEVPATH" -type d -name "bank*" -exec rmdir '{}' '+'
		rmdir "$DEVPATH"

It is a bit less subtle, but that works for me.

Cheers,
Kent.