Can I extend my stay in Thailand after a 90-day visa run if my visa expires on February 4, 2020?

The user is seeking information about extending their stay in Thailand after their current visa (90-day stamp) expires on February 4, 2020. They want to know if they can do a 30-day extension after a border run just before the expiration date. Responses indicate that while a last run just before February 4 can grant them an additional 90 days, they can then make a quick exit and re-entry for a 30-day visa exemption, which could lead to the possibility of a further 30-day extension, providing a stay until July 1, 2020.