问题
How can I highlight in Emacs the percentage sign "%" for accessing members of a type?
回答1:
Add the following to your .emacs:
(font-lock-add-keywords 'f90-mode
'(("%" . font-lock-keyword-face)))
This highlights % in the same colour as keywords like if, then, call, etc. There are a load of predefined faces listed in the manual, or you can specify a face manually.
来源：https://stackoverflow.com/questions/26631578/how-to-highlight-percentage-sign-for-fortran-code-in-emacs