From 28041f6d18011dbcf118501940617f2367562b8f Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Mon, 9 Mar 2015 11:52:58 -0400
Subject: [PATCH] delete unwanted options from map transforms

---
 src/builtins/map.js |  3 +++
 test/scenarios.js   | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/src/builtins/map.js b/src/builtins/map.js
index 1ea1352..f9bff2d 100644
--- a/src/builtins/map.js
+++ b/src/builtins/map.js
@@ -67,6 +67,9 @@ export default function map ( inputdir, outputdir, options ) {
 							};
 
 							let transformOptions = assign( {}, options.fn.defaults, options.userOptions );
+
+							delete transformOptions.accept;
+							delete transformOptions.ext;
 							result = options.fn.call( context, data.toString(), transformOptions );
 						} catch ( e ) {
 							let err = createTransformError( e, src, filename, this.node );
diff --git a/test/scenarios.js b/test/scenarios.js
index 1866089..4a99168 100644
--- a/test/scenarios.js
+++ b/test/scenarios.js
@@ -333,6 +333,28 @@ module.exports = function () {
 				done();
 			});
 		});
+
+		it( 'should delete unwanted options from map transformers', function ( done ) {
+			var source = gobble( 'tmp/foo' );
+
+			task = source.transform( checkOptions ).serve();
+
+			function checkOptions ( code, options ) {
+				assert.ok( !options.accept );
+				assert.ok( !options.ext );
+
+				return code;
+			}
+
+			checkOptions.defaults = {
+				accept: '.md',
+				ext: '.txt'
+			};
+
+			task.on( 'built', function () {
+				done();
+			});
+		});
 	});