Remove `export` pramgas from defs headers as it causes IWYU to believe
that the definitions from the defs headers comes from main header, which
is not what we really want.
"export" only prevents IWYU from adding these headers if the headers
that export them are included, while "private" ensures that IWYU never
adds these headers.
If nvim exited with nonzero status this is for one of the two reasons
- `:cquit` was invoked. This is used by users and plugins to communicate
a result, like a nonzero status will fail a `git commit` operation
- There was an internal error or deadly signal. in this case an error
message was likely written to stderr or to the screen.
In the latter case, the error message was often hidden by the TUI
exiting altscreen mode, which erases all visible terminal text.
This change prevents this in the latter case, while still cleaning up
the terminal properly when `:cquit` was deliberatily invoked.
Other cleanup like exiting mouse mode and raw mode is still done.
- The defined interface for the UI is only the RPC protocol. The original
UI interface as an array of function pointers fill no function.
- On the server, all the UI:s are all RPC channels.
- ui.c is only used on the server.
- The compositor is a preprocessing step for single-grid UI:s
- on the client, ui_client and tui talk directly to each other
- we still do module separation, as ui_client.c could form the basis
of a libnvim client module later.
Items for later PR:s
- vim.ui_attach is still an unhappy child, reconsider based on plugin experience.
- the flags in ui_events.in.h are still a mess. Can be simplified now.
- UX for remote attachment needs more work.
- startup for client can be simplified further (think of the millisecs we can save)
Allow Include What You Use to remove unnecessary includes and only
include what is necessary. This helps with reducing compilation times
and makes it easier to visualise which dependencies are actually
required.
Work on https://github.com/neovim/neovim/issues/549, but doesn't close
it since this only works fully for .c files and not headers.
