"Add font lock text property to highlight a single group of digit.
Use `num3-face-odd' if EVEN is nil and `num3-face-even' if EVEN is
non-nil. The region the face is set to is from LO to HI."
(font-lock-append-text-property lo hi 'face
(if even 'num3-face-even 'num3-face-odd)))
"Add font lock text property to highlight a single group of digit.
Use `num3-face-odd' if EVEN is nil and `num3-face-even' if EVEN is
non-nil. The region the face is set to is from LO to HI."
(font-lock-append-text-property lo hi 'face
(if even 'num3-face-even 'num3-face-odd)))