From 79f61a429ba7a67eaf90871ad40b47d6eafd6d9e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20M=C3=BCller?= <munter@fumle.dk>
Date: Sun, 18 Sep 2016 23:48:15 +0200
Subject: [PATCH] Exit process with correct error codes (#2445)

* Exit with code 130 in SIGINT. Refs #2438

* Exit with code 255 if more errors than 255 were returned. Fixes #2438
---
 bin/_mocha | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/bin/_mocha b/bin/_mocha
index 98cabdbc47..fe3f67861a 100755
--- a/bin/_mocha
+++ b/bin/_mocha
@@ -384,7 +384,7 @@ if (program.watch) {
   process.on('SIGINT', function() {
     showCursor();
     console.log('\n');
-    process.exit();
+    process.exit(130);
   });
 
   var watchFiles = utils.files(cwd, [ 'js' ].concat(program.watchExtensions));
@@ -442,7 +442,7 @@ if (program.watch) {
 
 function exitLater(code) {
   process.on('exit', function() {
-    process.exit(code);
+    process.exit(Math.min(code, 255));
   });
 }
 
@@ -452,7 +452,7 @@ function exit(code) {
   // https://github.com/visionmedia/mocha/issues/333 has a good discussion
   function done() {
     if (!(draining--)) {
-      process.exit(code);
+      process.exit(Math.min(code, 255));
     }
   }
 
@@ -470,6 +470,11 @@ function exit(code) {
 
 process.on('SIGINT', function() {
   runner.abort();
+
+  // This is a hack:
+  // Instead of `process.exit(130)`, set runner.failures to 130 (exit code for SIGINT)
+  // The amount of failures will be emitted as error code later
+  runner.failures = 130;
 });
 
 /**