Please make the basic keys for ztree-diff more discoverable

[michael-heerdegen]

Hello,

[Wishlist] Can we please make the relevant keys for ztree-diff actions more visible (like C, h, H, D, v, d, r, R)? They don't appear in C-h m, and there is not a menu, so one has to consult some non-interactive source to look them up. I suggest to list them in the header, right along the "Legend", that would be very convenient in my opinion.

TIA, Michael.

[quazgar]

I support this, I was especially surprised that g does not refresh the buffer as the help text suggests.

[quazgar]

I created a small PR for this. @fourier please check if this looks good to you.

[michael-heerdegen]

Your PR looks nice.

I would prefer d for diffing, a key also used by other packages for envoking diff.

For rescan I prefer R. There is also a partial rescan on r. Maybe we could show something like "r or R: (partial) rescan"?

Anyway, thanks for the PR, and hoping the author likes it.