Deprecation warning for plugin Flash

[jrief]

Whenever I open a text-ckeditor plugin, I get this deprecation warning:

I know, @fsbraun disabled "flash" in 31cb918 , so it seems strange that it still is in use. It seems that it has to be removed from here, which is a file beyond our control.

[fsbraun]

I agree. It's an artefact from using Ckeditor 4. It could (only) be removed by patching Ckeditor 4.

[MacLake]

No, you can also remove the Flash plug-in in the config. While defining the set of buttons doesn’t seem to help, using 'removePlugins' does the trick. I just learnt that from Vinit’s answer in the Slack support channel when I asked how to get rid of Word formatting. So here are my settings:

CKEDITOR_SETTINGS: dict[str, Union[str, list]] = {
    'removePlugins':
        ['pastefromword', 'flash'],
    'pasteFilter':
        "p b i u h1 h2 h3 h4 h5 h6 ul ol li; table tr td sub sup; a[href]",
    'stylesSet': 'default:/static/js/addons/ckeditor.wysiwyg.js',
    'contentsCss': ['/static/semantic/semantic.min.css'],
}

[MacLake]

I’ve added it to the default config:
#656