How do I manually fire an autocommand event to re-trigger filetype settings or test autocmds?
:doautocmd
:doautocmd fires any autocommand event manually, exactly as if that event had occurred naturally.
Tag: autocmds
How does Ctrl+C differ from Escape when exiting insert mode, and why does it matter?
<C-c>
exits insert mode immediately but silently skips two important side effects that (and its equivalent ) always trigger: abbreviation expansion and InsertLeave au