On Mon, Jun 24, 2013 at 4:33 AM, Johan Herland <johan@xxxxxxxxxxx> wrote:
> On Mon, Jun 24, 2013 at 9:28 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
>> Johan Herland <johan@xxxxxxxxxxx> writes:
>>
>>>> + git --git-dir="${3:-repo1}" log -1 --format='%h %s' "$2" >actual &&
>>>
>>> Isn't ${3:-repo1} a bashism?
>>
>> I do not think so. But now I looked at it again, I think I would
>> use ${3-repo1} form in this case myself. No caller passes an empty
>> string to the third place.
>
> Ok, I have to admit that I'm not at all sure where the line between sh
> and bash goes when it comes to ${magic}... Is there any good
> documentation on what is in sh and what is not?
POSIX: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02
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