diary-font-lock-keywords

[Glenn Morris]

In diary-lib.el, (defvar diary-font-lock-keywords ...) contains:

           (progn
             (require 'cal-islamic)
             (font-lock-diary-date-forms
              calendar-islamic-month-name-array-leap-year
              islamic-diary-entry-symbol t))

"cal-islamic" was renamed to "cal-islam" seven years ago.
There is no such variable as `calendar-islamic-month-name-array-leap-year'.
There is a `calendar-islamic-month-name-array', but I don't know if
that's an appropriate substitute.