Add options.shell

Author: sun-zheng-an

README.md

@@ -91,6 +91,14 @@ You can override any environment variables with this option.
 
 For example, setting it to `{PATH: process.env.PATH}` will reset the `PATH` if the default one brings your some troubles.
 
+#### options.shell
+
+type: `String`
+
+default: `/bin/sh` on UNIX, and `cmd.exe` on Windows
+
+Change it to `bash` if you like.
+
 #### options.quiet
 
 type: `Boolean`

index.js

@@ -22,6 +22,7 @@ function normalizeCommands (commands) {
 function normalizeOptions (options) {
   options = _.extend({
     cwd: process.cwd(),
+    shell: true,
     quiet: false,
     verbose: false,
     ignoreErrors: false,
@@ -48,7 +49,7 @@ function runCommands (commands, options, file, done) {
     var child = spawn(command, {
       env: options.env,
       cwd: gutil.template(options.cwd, context),
-      shell: true,
+      shell: options.shell,
       stdio: options.quiet ? 'ignore' : 'inherit'
     })
 

test/index.js

@@ -51,7 +51,7 @@ describe('gulp-shell(commands, options)', function () {
   it('prepends `./node_modules/.bin` to `PATH`', function (done) {
     var stream = shell([
       'echo $PATH | grep -q "' + join(process.cwd(), 'node_modules/.bin') + '"'
-    ])
+    ], {shell: 'bash'})
 
     expectToBeOk(stream, done)
 
@@ -91,6 +91,18 @@ describe('gulp-shell(commands, options)', function () {
       })
     })
 
+    describe('shell', function () {
+      it('changes the shell', function (done) {
+        var stream = shell([
+          '[[ $0 = bash ]]'
+        ], {shell: 'bash'})
+
+        expectToBeOk(stream, done)
+
+        stream.write(fakeFile)
+      })
+    })
+
     describe('quiet', function () {
       it("won't output anything when `quiet` == true", function (done) {
         var stream = shell(['echo cannot see me!'], {quiet: true})