From: Eric Sunshine <sunshine@sunshineco.com>
Date: Wed, 27 Apr 2016 18:10:41 GMT
Subject: Re: [PATCH 53/83] builtin/apply: make find_header() return -1 instead of die()ing
Message-ID: <CAPig+cSdRL3hc81pXXFKAZWisGYPHcd47Z4BBhkeSWZ=5_FT9A@mail.gmail.com>
In-Reply-To: <CACsJy8B7g8WgWbr4M4LHFyBshN2gi30pL1bCcZcTPB7qtmnWdQ@mail.gmail.com>

On Mon, Apr 25, 2016 at 9:18 AM, Duy Nguyen <pclouds@gmail.com> wrote:
> On Sun, Apr 24, 2016 at 8:33 PM, Christian Couder
> <christian.couder@gmail.com> wrote:
>> To be compatible with the rest of the error handling in builtin/apply.c,
>> find_header() should return -1 instead of calling die().
>>
>> Unfortunately find_header() already returns -1 when no header is found,
>> so let's make it return -2 instead in this case.
>
> I don't think this is a good way to go. Too many magic numbers. I
> don't have a better option though. Maybe returning names instead of
> numbers would help a bit.

I suppose 'hdrsize' could signal this extra condition. For instance,
always return -1 on error, and set hdrsize to 0 for header not found
(unless 0 is a valid size?), and -1 for any other error.

But perhaps that's getting too clever...