Re: [PATCH] Fix install-doc-quick target

> I do not like the behaviour "be stupid and assume cwd to be the working 
> tree root, if GIT_DIR is set and GIT_WORK_TREE is not".
>
> It bears _all_ kind of stupid connotations.  Just imagine what would 
> happen with "git --git-dir=. add .".
>
> IMHO the new behaviour is _better_, since you can not shoot yourself in 
> the foot so easily.  Being able to safeguard against doing a work tree 
> operation inside the git directory is a direct and elegant consequence of 
> defaulting to $GIT_DIR/.. in case $GIT_DIR ends in "/.git", and no work 
> tree if $GIT_DIR does _not_ end in "/.git".
>
> The semantics "if GIT_DIR is set, just assume the cwd to be the work tree 
> root unilaterally" is _broken_ as far as I am concerned.