fixed; remove -size arg from extent

closes #103

lib/args.js

@@ -1000,11 +1000,6 @@ module.exports = function (proto) {
       geometry = 'x' + h + options
     }
 
-    // avoid error "geometry does not contain image (unable to crop image)" - gh-17
-    if (!(this.inputIs('jpg') && ~this._out.indexOf('-crop'))) {
-      this.in("-size",  geometry);
-    }
-
     return this.out("-extent", geometry);
   }
 

test/extent.js

@@ -8,12 +8,10 @@ module.exports = function (gm, dir, finish, GM) {
 
   var args = m.args();
   assert.equal('convert', args[0]);
-  assert.equal('-size', args[1]);
-  assert.equal('300x300', args[2]);
-  assert.equal('-scale', args[4]);
-  assert.equal('200x100', args[5]);
-  assert.equal('-extent', args[6]);
-  assert.equal('300x300', args[7]);
+  assert.equal('-scale', args[2]);
+  assert.equal('200x100', args[3]);
+  assert.equal('-extent', args[4]);
+  assert.equal('300x300', args[5]);
 
   if (!GM.integration)
     return finish();

test/gravity.js

@@ -11,9 +11,7 @@ module.exports = function (img, dir, finish, gm) {
 
   var args = m.args();
   assert.equal('convert', args[0]);
-  assert.equal('-size', args[1]);
-  assert.equal('300x300', args[2]);
-  args= args.slice(4);
+  args= args.slice(2);
   assert.deepEqual(args, [
     '-scale',
     '200x100',