Template:Emacs and ctl

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It is useful to have emacs use its scheme-mode for editing ctl files, so that hitting tab indents nicely, and so on. emacs does this automatically for files ending with ".scm"; to do it for files ending with ".ctl" as well, add the following lines to your ~/.emacs file:

(push '("\\.ctl\\'" . scheme-mode) auto-mode-alist)

or if your emacs version is 24.3 or earlier and you have other ".ctl" files which are not Scheme:

(if (assoc "\\.ctl" auto-mode-alist)
  (add-to-list 'auto-mode-alist '("\\.ctl\\'" . scheme-mode))))

(Incidentally, emacs scripts are written in "elisp," a language closely related to Scheme.)

If you don't use emacs (or derivatives such as Aquamacs), it would be good to find another editor that supports a Scheme mode. For example, jEdit is a free/open-source cross-platform editor with Scheme-syntax support. Another option is GNU gedit (for GNU/Linux and Unix); in fact, S. Hessam Moosavi Mehr has donated a hilighting mode for Meep/MPB that specially highlights the Meep/MPB keywords.

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