[libvirt] [PATCH 0/2] virsh: honor VISUAL

On IRC yesterday, the comment came up that 'virsh edit' is over-protective, because it prevented me from editing in-terminal using my favorite editor, even after I worked around the fact that sudo sanitizes EDITOR. Besides, historically, VISUAL is used in situations where opening a new window is okay, while EDITOR is used when editing should reuse the current terminal; so we should honor that convention.