diary-font-lock-date-forms
diary-font-lock-date-forms is a compiled Lisp function in `diary-lib.el
'.
(diary-font-lock-date-forms MONTH-ARRAY &optional SYMBOL ABBREV-ARRAY)
Create font-lock patterns for `diary-date-forms' using MONTH-ARRAY.
If given, optional SYMBOL must be a prefix to entries. If
optional ABBREV-ARRAY is present, also matches the abbreviations
from this array (with or without a final `.'), in addition to the
full month names.