fish-shell/doc_src/emit.txt

\section emit emit - Emit a generic event

\subsection emit-synopsis Synopsis
\fish{synopsis}
emit EVENT_NAME [ARGUMENTS...]
\endfish

\subsection emit-description Description

`emit` emits, or fires, an event. Events are delivered to, or caught by, special functions called event handlers. The arguments are passed to the event handlers as function arguments.


\subsection emit-example Example

The following code first defines an event handler for the generic event named 'test_event', and then emits an event of that type.

\fish
function event_test --on-event test_event
    echo event test: $argv
end

emit test_event something


\subsection notes Notes

Note that events are only sent to the current fish process as there is no way to send events from one fish process to another.
\endfish