font-lock-unfontify-buffer-function

font-lock-unfontify-buffer-function is a variable defined in `font-lock.el'.
Its value is

font-lock-default-unfontify-buffer

• This variable may be risky if used as a file-local variable.

Documentation:
Function to use for unfontifying the buffer.
This is used when turning off Font Lock mode.
This is normally set via `font-lock-defaults'.