jQuery.extend() deep destroys array of zero

[genezys]

jQuery.extend(true, {plop:[]}, {plop:[0]}) 

returns an object where plop is an empty array.

[davidserduke]

It appears this is a coersion problem. In jQuery.extend there is a section

// Prevent never-ending loop
if ( target == prop[i] )
  continue;

Coersion says that [] is false and 0 is false. So they are equal. This test should probably use === instead.

[davidserduke]

Fixed in [3841].

Note, the code treats all objects the same with no special handling for Arrays at this point.