Add keywords that begin with a number sign

Author: gooichi

utils/swift-mode.el

@@ -52,6 +52,9 @@
    `(,(regexp-opt '("willSet" "didSet") 'words) . font-lock-keyword-face)
    ;; Operators
    `("\\b\\(?:\\(?:pre\\|post\\|in\\)fix\\s-+\\)operator\\b" . font-lock-keyword-face)
+   ;; Keywords that begin with a number sign
+   `("#\\(available\\|else\\|elseif\\|end\\|if\\)\\b" . font-lock-string-face)
+   `("#\\(column\\|file\\|function\\|line\\|selector\\)\\b" . font-lock-keyword-face)
    ;; Infix operator attributes
    `(,(regexp-opt '("precedence" "associativity" "left" "right" "none")
                   'words) . font-lock-keyword-face)