font-lock-multiline

font-lock-multiline is a variable defined in `font-lock.el'.
Its value is

nil

• Automatically becomes buffer-local when set.

Documentation:
Whether font-lock should cater to multiline keywords.
If nil, don't try to handle multiline patterns.
If t, always handle multiline patterns.
If `undecided', don't try to handle multiline patterns until you see one.
Major/minor modes can set this variable if they know which option applies.