From c13bfdc0913d5828c049d727b1890fc9e398724c Mon Sep 17 00:00:00 2001
From: Ben Noordhuis <info@bnoordhuis.nl>
Date: Mon, 29 Jul 2013 16:20:24 +0200
Subject: [PATCH] child_process: add 'shell' option to .exec()

No test, we can't rely on an alternate shell being available.

Fixes #5935.
---
 doc/api/child_process.markdown | 4 ++++
 lib/child_process.js           | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/doc/api/child_process.markdown b/doc/api/child_process.markdown
index 846649429ae..4aef436371a 100644
--- a/doc/api/child_process.markdown
+++ b/doc/api/child_process.markdown
@@ -464,6 +464,10 @@ See also: `child_process.exec()` and `child_process.fork()`
   * `cwd` {String} Current working directory of the child process
   * `env` {Object} Environment key-value pairs
   * `encoding` {String} (Default: 'utf8')
+  * `shell` {String} Shell to execute the command with
+    (Default: '/bin/sh' on UNIX, 'cmd.exe' on Windows,  The shell should
+     understand the `-c` switch on UNIX or `/s /c` on Windows. On Windows,
+     command line parsing should be compatible with `cmd.exe`.)
   * `timeout` {Number} (Default: 0)
   * `maxBuffer` {Number} (Default: 200*1024)
   * `killSignal` {String} (Default: 'SIGTERM')
diff --git a/lib/child_process.js b/lib/child_process.js
index cfb40f06725..b034fa65c6b 100644
--- a/lib/child_process.js
+++ b/lib/child_process.js
@@ -576,6 +576,10 @@ exports.exec = function(command /*, options, callback */) {
     file = '/bin/sh';
     args = ['-c', command];
   }
+
+  if (options && options.shell)
+    file = options.shell;
+
   return exports.execFile(file, args, options, callback);
 };