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

From: Alexey Shumkin <[email-masked]>
Date: Thu, 4 Jul 2013 02:25:08 +0400

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?
Yep!
when I was thinking about Johannes's suggestions, I finally came to the decision
alike yours.