jatoo

Doesn't the code as written potentially keep extending the deadline each time the deadline_flush is called even if nothing is written to the buffer? So long as you call the flush often enough which would depend on the work in the while loop.

You can still type a URL in when you want, just as easily as you ever could. You can still see the URL, presumably, by clicking the button. The only thing you can't do as easily is edit the current URL, which I rarely ever do.

Calls that this will 'break the web' are hyperbolic. You can still click hyperlinks. That's what makes the web the web.

URLs are untidy, even for technical users, and hiding them when not being entered won't hurt anyone.