Hi Bastien,

Bastien writes:
> I tried to apply this (transitory?) patch against maint and it did not
> apply.  It applies okay on master.  For bug fixes, please make patches
> againt the maint branch.
This fixes a bug introduced by a commit in master. I've attached the same
patch here, properly formated. I think it should be applied to master.

It reverts a part of a2cb9b853: permissions are no longer set before writing
to the tangled file.

I've CC'd Tom, which made the original suggestion. I guess we could set the
write and execute permissions before writing, and set the read permissions
afterwards.

-- 
Sébastien Miquel