exitcode.diff

$ git diff master
diff --git a/lib/ls.js b/lib/ls.js
index 842b612..194aae6 100644
--- a/lib/ls.js
+++ b/lib/ls.js
@@ -63,6 +63,8 @@ function ls (args, silent, cb) {
     }
     console.log(out)

+    if (args.length && !data._found) process.exitCode = 1
+
     // if any errors were found, then complain and exit status 1
     if (lite.problems && lite.problems.length) {
       er = lite.problems.join('\n')
diff --git a/lib/utils/error-handler.js b/lib/utils/error-handler.js
index 8637592..a82f97e 100644
--- a/lib/utils/error-handler.js
+++ b/lib/utils/error-handler.js
@@ -44,7 +44,7 @@ process.on("exit", function (code) {
 })

 function exit (code, noLog) {
-  exitCode = exitCode || code
+  exitCode = exitCode || process.exitCode || code

   var doExit = npm.config.get("_exit")
   log.verbose("exit", [code, doExit])