bug#46459: 28.0.50; Shared keymap for Git VC dir "Branch" header?

[Protesilaos Stavrou]

Dear maintainers,

In vc-git.el the header for vc-dir stashes is propertized with its own
keymap.  This means that while point is over the value of the "Stash:"
header, the specified keymap comes into effect, instead of the main one
for vc-dir.  The latter takes effect when point is anywhere but that
header's value.

Should this principle be applied to the value of the "Branch" header as
well?  The attached patch is a proof-of-concept to that end.

If you believe this is worth doing, what else do you think should go
into such a patch from a usability standpoint?

All the best,
Protesilaos

-- 
Protesilaos Stavrou
protesilaos.com

0001-Add-shared-keymap-to-Git-VC-dir-Branch-header.patch
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