[GAP Forum] GAP mode for emacs

[Rafael]

Ivan Andrus <darthandrus at gmail.com>
writes:

> I have been using gap-mode for emacs version 1.96 by Michael Smith.
> There are a few things that I would like to add, principally syntax
> highlighting.  Has anyone else done this that I couldn't find?  Would
> there be interest in an updated version with some improvements?

This is what I use. It is really far from perfect, but it is something...

  (defun add-custom-keyw()
    "adds a few special keywords for gap mode"
    (font-lock-add-keywords nil
     '(
       ("\\bif\\b\\|then\\|else\\|elseif" . 'font-lock-keyword-face )
       ("while\\|\\bdo\\b\\|\\bfi\\b" . 'font-lock-keyword-face )
       ("\\bend\\b\\|return\\|\\bnot\\b\\|function\\|\\blocal\\b" . 'font-lock-keyword-face )
       ("\\bfor\\b\\|\\bin\\b\\|\\bod\\b\\|\\bmod\\b\\|\\band\\b" . 'font-lock-keyword-face )
       ("true\\|false" . 'font-lock-constant-face )
       ("Print\\|Length\\|\\bOrbits\\b\\|Subsets\\|Difference" . 'font-lock-function-name-face )
       ("List\\|OnSets\\|Group\\|Intersection" . 'font-lock-function-name-face )
       ("IsTransitive\\|OnTuples\\|Concatenation\\|Filtered" . 'font-lock-function-name-face )
       ("Add\\|Sum\\|SymmetricGroup\\|Filtered\\|RightCosets" . 'font-lock-function-name-face )
       ("Eigenvalues\\|Rationals\\|" . 'font-lock-function-name-face )
       ("\\bCharacteristicPolynomial\\b" . 'font-lock-function-name-face )
       ("Filtered\\|RightCosets" . 'font-lock-function-name-face )
       ("#.*" . font-lock-comment-face)
       )))
  (add-hook 'gap-mode-hook 'add-custom-keyw)