Re: [PATCH] t/perf: correctly align non-ASCII descriptions in output

[Jeff King <peff@peff.net>]

On Fri, Apr 21, 2017 at 07:44:28PM +0000, Ævar Arnfjörð Bjarmason wrote:

> Change the test descriptions from being treated as binary blobs by
> perl to being treated as UTF-8. This ensures that e.g. a test
> description like "æ" is counted as 1 character, not 2.
> 
> I have WIP performance tests for non-ASCII grep patterns on another
> topic that are affected by this.

Makes sense. As this is purely about test titles in our project,
choosing utf8 as the only encoding is quite sensible.

> diff --git a/t/perf/aggregate.perl b/t/perf/aggregate.perl
> index 924b19dab4..1dbc85b214 100755
> --- a/t/perf/aggregate.perl
> +++ b/t/perf/aggregate.perl
> @@ -88,6 +88,7 @@ for my $t (@tests) {
>  sub read_descr {
>  	my $name = shift;
>  	open my $fh, "<", $name or return "<error reading description>";
> +	binmode $fh, ":utf8" or die "PANIC on binmode: $!";

I thought there was some "use" flag we could set to just make all of our
handles utf8. But all I could come up with was stuff like PERLIO and
"perl -C". Using binmode isn't too bad, though (I think you could
just do it as part of the open, too, but I'm not sure if antique
versions of perl support that).

-Peff