Door lock wont!

[Per Lindgren]

Car in question: 92 Cabriolet, type89 (actually a type 8G)

Something happened to the door lock today. I opened the door, and heard
a loud click noise inside. After this, the door wouldn't shut unless I
pulled the outer handle, this was 5-6 times. After this, the driver's
door wont lock. Not with the key (power locks on other door and trunk
ok) nor when trying to push the knob down.

This is just how it is supposed to be when the door is open, so clearly
something in the mechanism has failed, so it appears to still be open
when it is in fact shut. Any BTDT? Hafta go in and check it out
tomorrow, had to park the car chin to chin with the Squareback so no one
could open the door, and then climb out the other side.

PerL
92 Cab 2.3