Add .jshintrc overrides handling to stdin processing

The new .jshintrc overrides were not being handled by
SublimeLinter-jshint because the --filename flag was not
being passed to the lint() function.  This has been fixed.

Closes jshint#1880

src/cli.js

@@ -596,15 +596,24 @@ var exports = {
     if (opts.useStdin) {
       cli.withStdin(function (code) {
         var config = opts.config;
-        if (opts.filename && !config) {
-          var filename = path.resolve(opts.filename);
+        var filename;
+
+        // There is an if(filename) check in the lint() function called below.
+        // passing a filename of undefined is the same as calling the function
+        // without a filename.  If there is no opts.filename, filename remains
+        // undefined and lint() is effectively called with 4 parameters.
+        if (opts.filename) {
+          filename = path.resolve(opts.filename);
+        }
+
+        if (filename && !config) {
           config = loadNpmConfig(filename) ||
             exports.loadConfig(findConfig(filename));
         }
 
         config = config || {};
 
-        lint(extract(code, opts.extract), results, config, data);
+        lint(extract(code, opts.extract), results, config, data, filename);
         (opts.reporter || defReporter)(results, data, { verbose: opts.verbose });
         cb(results.length === 0);
       });

tests/cli.js

@@ -1062,6 +1062,7 @@ exports.group = {
   },
 
   testFilenameOverridesOptionSTDIN: function (test) {
+    test.expect(4);
     var rep = require("../examples/reporter.js");
     var stdin = require('mock-stdin').stdin();
     var errors = [];
@@ -1090,7 +1091,7 @@ exports.group = {
 
     sinon.stub(shjs, "test")
       .withArgs("-e", sinon.match(/fake\/\.jshintrc$/)).returns(true)
-      .withArgs("-e", sinon.match(/\.jshintrc$/)).returns(false);
+      .withArgs("-e", sinon.match(/\.jshintrc$/)).returns(true);
 
     cli.exit.restore();
     sinon.stub(cli, "exit");
@@ -1111,6 +1112,21 @@ exports.group = {
 
     test.equal(errors.length, 1, "should be a single error.");
     test.equal(cli.exit.args[0][0], 2, "status code should be 2 when there is a linting error.");
+
+    errors.length = 0;
+    cli.exit.restore();
+    sinon.stub(cli, "exit");
+
+    stdin = require('mock-stdin').stdin();
+    cli.interpret([
+      "node", "jshint", "--filename", "fake2/fakescript.js", "--reporter=reporter.js", "-"
+    ]);
+
+    stdin.send(bad);
+    stdin.end();
+
+    test.equal(errors.length, 0, "should be no errors.");
+    test.equal(cli.exit.args[0][0], 0, "status code should be 0 when there is no linting error.");
     rep.reporter.restore();
     process.cwd.restore();
     shjs.cat.restore();