Simple add-on to change 'copy' keyborad shortcut action.
Ctrl-C (or Command-C) copy the page title and URL when select nothing.
When you selecting something, or an input field has forcus, Copy Fixer does nothing. It doesn't change the original function.
If you want to make sure that Copy Fixer works, please click somewhere background and press Ctrl-C.
The text format is like this:
Add-ons for Firefox
There is also Chrome extension.
Copy Fixer - Google Chrome extension gallery