Insert link: adding a link should auto-detect selected URLs

[nylen]

Scenario

• Paste or type a URL into a Paragraph block
• Click the Link button in the toolbar

Expected behavior

The link dialog detects that I have selected a URL in my post content and pre-fills the URL field with the selected text. (Or, better yet, the URL is automatically recognized and turned into a link.)

Actual behavior

The URL field in the link dialog is left blank. If I have used my clipboard for anything else since then, I have to perform several extra operations to fill in the URL.

[nylen]

Adding a link with no selected text and pasting a URL leaves a link with empty text. In this case the link text should probably be pre-filled with the URL.

I would also like to be able to trigger this behavior via Ctrl+K.