Bugfixes, updated examples

* Added example of using the abort event
* Added setter/getter for allowAbbreviatedCommands
* Fixed SIGINT handling

examples/aborting.php

@@ -0,0 +1,44 @@
+<?php
+
+use NoccyLabs\React\Shell\CommandHandler;
+use React\EventLoop\Loop;
+
+require_once __DIR__."/../vendor/autoload.php";
+
+$operation = new class {
+    public bool $active = false;
+};
+
+$shell = new NoccyLabs\React\Shell\Shell();
+
+// The prompt event is invoked before every full redraw. Call redrawPrompt()
+// to trigger it manually. Set the prompt or the style here.
+$shell->on('prompt', function ($shell) {
+    $shell->setPrompt(">> ");
+});
+
+// Input handler, parse the commands.
+$shell->on('input', function ($args, $shell) use ($operation){
+    switch ($args[0]) {
+        case 'start':
+            $operation->active = true;
+            $shell->write("Operation started... Press Ctrl-C to abort\n");
+            break;
+        default:
+            $shell->write("Type start to start the imaginary operation, then ctrl-c to abort it. Press ctrl-c again to exit.\n");
+    }
+});
+
+// The abort event lets you keep going if a specific operation is the main
+// context. For example, if you are copying a file ^C could stop the copy
+// operation.
+$shell->on('abort', function ($shell) use ($operation) {
+    if ($operation->active == true) {
+        $shell->write("Aborting operation\n");
+        $operation->active = false;
+    } else {
+        $shell->write("Exiting\n");
+        $shell->close();
+    }
+});
+