Re: [PATCH v2] glossary: add definition for overlay

> Thomas Gummerer <t.gummerer@gmail.com> writes:
> 
> > diff --git a/Documentation/glossary-content.txt b/Documentation/glossary-content.txt
> > index 023ca95e7c..53df6ecb0a 100644
> > --- a/Documentation/glossary-content.txt
> > +++ b/Documentation/glossary-content.txt
> > @@ -287,6 +287,13 @@ This commit is referred to as a "merge commit", or sometimes just a
> >  	origin/name-of-upstream-branch, which you can see using
> >  	`git branch -r`.
> >  
> > +[[def_overlay]]overlay::
> > +	Only update and add files to the working directory, but don't
> > +	delete them, similar to how 'cp -R' would work.  This is the
> > +	default mode in a <<def_checkout,checkout>>.  In contrast,
> > +	no-overlay mode will also delete tracked files not present in
> > +	the source, similar to 'rsync --delete'.
> > +
> 
> At least the mention of "checkout" needs to be a lot tightened to
> clarify that it is talking about "checkout <pathspec>", aka
> "checking out files out of the index or a tree-ish", as opposed to
> "checking out a branch to work on it", as checking out a branch will
> not work in the overlay fashion.  What's not in the newly checked
> out branch will disappear from the working tree.

> If readers happen to be not paying close attention to the fact that
> the difference between overlay and non-overlay is about the
> destination, "similar to how 'cp -R' would work" may not click to
> their minds.  "similar to how 'cp -R' updates the contents in the
> destination directory" may avoid such a risk, albeit it might be a
> bit too verbose.  I dunno.