Subject: Re: [PATCH] t4205: don't rely on en_US.UTF-8 locale existing

From: John Keeping <[email-masked]>
Date: Wed, 3 Jul 2013 22:53:03 +0100

On Wed, Jul 03, 2013 at 02:41:06PM -0700, Junio C Hamano wrote:
> John Keeping <[email-masked]> writes:
> 
> > My system doesn't have the en_US.UTF-8 locale (or plain en_US), which
> > causes t4205 to fail by counting bytes instead of UTF-8 codepoints.
> >
> > Instead of using sed for this, use Perl which behaves predictably
> > whatever locale is in use.
> >
> > Signed-off-by: John Keeping <[email-masked]>
> > ---
> > This patch is on top of 'as/log-output-encoding-in-user-format'.
> 
> Thanks.  I think Alexey is going to send incremental updates to the
> topic so I won't interfere by applying this patch on top of the
> version I have in my tree.
> 
> But I do agree that using Perl may be a workable solution.
> 
> An alternative might be not to use this cryptic 3-arg form of
> commit_msg at all.  They are used only for these three:
> 
> 	$(commit_msg "" "8" "..*$")
> 	$(commit_msg "" "0" ".\{11\}")
> 	$(commit_msg "" "4" ".\{11\}")
> 
> I somehow find them simply not readable, in order to figure out what
> is going on.
> 
> Just using three variables to hold what are expected would be far
> more portable and readable.
> 
> # "anfänglich" whatever it means.
> sample_utf8_part=$(printf "anf\303\244ng")
> 
> commit_msg () {
> 	msg="initial. ${sample_utf8_part}lich";
> 	if test -n "$1"
> 	then
> 		echo "$msg" | iconv -f utf-8 -t "$1"
> 	else
> 		echo "$msg"
>         fi
> }
> 
> And then instead of writing in the expected test output.
> 
> 	$(commit_msg "" "8" "..*$")
> 	$(commit_msg "" "0" ".\{11\}")
> 	$(commit_msg "" "4" ".\{11\}")
> 
> we can just say
> 
> 	initial...
>         ..an${sample_utf8_part}lich
> 	init..lich
> 
> It is no worse than those cryptic 0, 4, 8 and 11 magic numbers we
> see in the test, no?

That's probably better since we don't need to rely on some other tool
getting it right.

Alexey, will you incorporate this change in your incremental updates?