Here is a new version introducing a `let' form spanning everything
needed.  There is no need for two calls to `getenv' anymore.
I've attached the patch in two versions: with and without whitespace
changes (git diff -b), to make it easier to review.


Thanks,
   François

On Wed, Apr 1, 2015 at 11:03 PM, Stefan Monnier
<monnier@iro.umontreal.ca> wrote:
>> 1- add one (which might be the most correct implementation, but
>> generates a very large patch for mostly unchanged lines)
>
> That's the better option.
> You can ask diff to ignore whitespace changes, which keeps the patch readable.
>
>
>         Stefan