Macro define_plugin 

macro_rules! define_plugin {
    ($prefix:literal, $init_function:ident, $query_handler:ident) => { ... };
    ($prefix:literal, $keyboard_shortcut:literal, $init_function:ident, $query_handler:ident) => { ... };
}

This macro is used to define a Findex plugin.

Example usage:

use findex_plugin::{define_plugin, FResult};
use abi_stable::std_types::*;

fn init(config: &RHashMap<RString, RString>) -> RResult<(), RString>  {
    // Set up your plugin using the config if necessary
    // Return RErr if something went wrong

    // Returning this indicates that the plugin initalization is successful
    ROk(())
}

fn handle_query(query: RStr) -> RVec<FResult> {
    let mut result = vec![];

    /* Do stuff here */

    RVec::from(result)
}

define_plugin!("prefix!", init, handle_query);
// or, add a shortcut key
define_plugin!("prefix!", "<Ctrl><Shift>p", init, handle_query);

Refer to the README.md of this crate for more detailed explanation