A follow-up from https://github.com/backdrop/backdrop-issues/issues/1265
From @docwilmot
This is a great idea. How about we add one of those js "click this link/button to copy to clipboard" thingies as well?
From @quicksketch
Unfortunately the only way to do this (afaik) is to use a Flash-based widget. Normal JavaScript doesn't have access to write to the clipboard.
From @Dinornis
no Flash stuff, please.
From @jenlampton
How does GitHub do it?

<button aria-label="Copy to clipboard" class="js-zeroclipboard btn btn-sm zeroclipboard-button tooltipped tooltipped-s" data-copied-hint="Copied!" type="button">
<svg aria-hidden="true" class="octicon octicon-clippy" height="16" version="1.1" viewBox="0 0 14 16" width="14">
<path fill-rule="evenodd" d="M2 13h4v1H2v-1zm5-6H2v1h5V7zm2 3V8l-3 3 3 3v-2h5v-2H9zM4.5 9H2v1h2.5V9zM2 12h2.5v-1H2v1zm9 1h1v2c-.02.28-.11.52-.3.7-.19.18-.42.28-.7.3H1c-.55 0-1-.45-1-1V4c0-.55.45-1 1-1h3c0-1.11.89-2 2-2 1.11 0 2 .89 2 2h3c.55 0 1 .45 1 1v5h-1V6H1v9h10v-2zM2 5h8c0-.55-.45-1-1-1H8c-.55 0-1-.45-1-1s-.45-1-1-1-1 .45-1 1-.45 1-1 1H3c-.55 0-1 .45-1 1z"></path>
</svg>
</button>
Recent comments
Thanks!! Easiest for me to just give permission for anon users to see the admin theme. That worked. It's just for this one page.
Link field in a Content Type is malformed for annonymous user- Permission issue?
It looks like the screenshot of what you show it should look like is the admin theme whereas what they see is the front end theme. By default, such users won't have permissions to see the...
Link field in a Content Type is malformed for annonymous user- Permission issue?
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The Future of Configuration Recipes for Backdrop CMS