It is currently expected that UIs will figure out when to hide msg_history_show messages by themselves.

I think this is bad for two reasons:

• It makes UIs less similar, increasing the number of things to learn when going from one UI to another.
• It makes UIs different from the TUI, which offers a press ENTER prompt when the time to hide msg_history_show messages has come.

After [di

On some platforms you can execute

:set guifont=*

to bring up a font requester dialog and interactively pick your font. Screenshot:

Could GNvim implement that font requester option for set guifont=*?

Neosnippet is a vim plugin for snippet, can you add neosnippet support?

Sometimes a plugin (or multiple plugins) might fail to update/install.
It would make sense to add a retry option (perhaps mapped to R, since r is already mapped to revert).