On Mon, Feb 11, 2013 at 09:07:53AM -0800, Junio C Hamano wrote:
> Erik Faye-Lund <kusmabite@xxxxxxxxx> writes:
>
> > However, since git only looks at one byte at the time for
> > short-options, it ends up reporting a partial UTF-8 sequence
> > in such cases, leading to corruption of the output.
>
> Isn't it a workable, easier and more robust alternative to punt and
> use the entire ctx.argv[0] as unrecognized?
Yes, but it regresses the usability:
[before]
$ git foobar -qrxs
unknown switch: x
[after]
$ git foobar -qrxs
unknown switch: -qrxs
One is much more informative than the other, and you are punishing the
common ascii case for the extremely uncommon case of utf-8. Maybe:
if (isascii(*ctx.opt))
error("unknown option `%c'", *ctx.opt);
else
error("unknown multi-byte short option in string: `%s'", ctx.argv[0]);
which only kicks in in the uncommon case (and extends the error message
to make it more clear why we are showing the whole string).
-Peff
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