/
    (                     # 1
        (.*\.c\s)         # 2
      | (.*\.h\s)         # 3
      | (.*\.cpp\s)       # 4
    )
  | 
    (\s+                  # 5
      (.*)\%\s+           # 6
      (of+)\s+\d+\s       # 7
    )
  |
    (\bNone­\b)            # 8
/gx