Search code examples
emacsxemacs

emacs c++ indentation and color highlighting

I am not getting indentation or colors when I open a cpp/h file with my emacs/xemacs installation on windows. Could you please advise what I need to do in my settings file to make this happen? Thanks

Solution

  • It's the auto-mode-alist variable that stores the modes that should be invoked in relation with the file extension. This variable is configured by default to associate c++-mode to cpp files.

    See the content of auto-mode-alist by doing a C-h v auto-mode-alist RET.

    You could also try to define the association by yourself like this :

    (setq auto-mode-alist
      (append '(("\\.\\(CC?\\|HH?\\)\\'" . c++-mode)
        ("\\.[ch]\\(pp\\|xx\\|\\+\\+\\)\\'" . c++-mode)
        ("\\.\\(cc\\|hh\\)\\'" . c++-mode)
        ) auto-mode-alist ))

    Also note that .h files are by default considered C files, not C++.