cpp-font-lock-keywords-source-directives

cpp-font-lock-keywords-source-directives is a variable defined in `font-lock.el'.
Its value is

"define\\|e\\(?:l\\(?:if\\|se\\)\\|ndif\\|rror\\)\\|file\\|i\\(?:f\\(?:n?def\\)?\\|mport\\|nclude\\)\\|line\\|pragma\\|undef\\|warning"

• This variable may be risky if used as a file-local variable.

Documentation:
Regular expression used in `cpp-font-lock-keywords'.