Re: [PATCH] Avoid using dc in git-count-objects

Linus Torvalds [off-list ref] writes:

Oh - there's another similarity between $(..) and $((..)). They're both 
POSIX 1003.2 standard features, so any "modern" shell should support them. 
Although in practice I don't know if that means anything else than ksh 
(where both syntaxes came from, actually).

OK, you prodded me enough to come to 21st century ;-).

I was hoping that doing .git/objects/ traversal and disk block
accounting ourselves maybe in C or Perl would be enough for that
particular program, but I would not object if the community
concensus is we would run on only POSIX shells anymore.

I still resist saying that we run only on Bash, though.  I
suspect we already have some bashism on the periphery, but
eradicating them has been lower priority for me.