For example:
- (font-lock-add-keywords 'c-mode
- '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 'font-lock-warning-face prepend)
- (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . 'font-lock-keyword-face)))
+ (font-lock-add-keywords \\='c-mode
+ \\='((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 \\='font-lock-warning-face prepend)
+ (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . \\='font-lock-keyword-face)))
adds two fontification patterns for C mode, to fontify `FIXME:' words, even in
comments, and to fontify `and', `or' and `not' words as keywords.