1.3.0 adding an extra space to form field class attribute

[coreybrett]

After updating to 1.3.0 I started getting the following JS error on one of my forms.

jQuery.Deferred exception: An invalid or illegal string was specified create/<@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:87915 create@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:87875 D/<@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:9772 Pr@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:92198 Mr@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:97464 Cr/<@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:98908 Cr@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:99006 e.create@http://localhost:5000/_static/libs/filepond-4-7-2/filepond.min.js:9:102387 @http://localhost:5000/_static/sdist/67435b6aa6ce2cf0e35dd319fb7967e9.js:2:402 l@http://localhost:5000/_static/js/libs/jquery-3.3.0.min.js:2:29375 a/</c<@http://localhost:5000/_static/js/libs/jquery-3.3.0.min.js:2:29677

I traced this down to the upgrade from 1.2.0 to 1.3.0

The diff was...

<input class="form-control-file " id="file_" name="file_" type="file"> with 1.3.0
<input class="form-control-file" id="file_" name="file_" type="file"> with 1.2.0

Notice the extra space.

I was able to workaround the issue by adding render_kw={"class": "xyz"} to my form class.

[greyli]

Thanks for the report, just released 1.3.1 to fix this issue.