Tab Numbering 作者： Tuomas Salo

This extension writes the tab number to the first eight tabs, the ones accessible with ctrl/cmd + number. See <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f824086b6d07705a06b6ea9485f0cb780170d7720eb5074fd88cb2ba65cd3c8d/https%3A//github.com/tuomassalo/tab-numbering">https://github.com/tuomassalo/tab-numbering</a> for source code and for filing bug reports.