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GNU APL mode

From: Elias Mårtenson
Subject: GNU APL mode
Date: Fri, 27 Dec 2013 12:45:06 +0800

In October of this year, there was a thread on this mailing list regarding an Emacs mode for GNU APL. As I did not know about this discussion when I started building my own mode for it, I started working on my own version. I've been working on this mode for about a month now, and I feel it's probably ready for other people to use (maybe :-) ).

The source repository for gnu-apl-mode can be found here: https://github.com/lokedhs/gnu-apl-mode

Please note that it requires GNU APL from their Subversion repository, as it utilises some features that were not in the latest official release (1.1).

In this version, I have implemented three different ways of inputting APL characters:

  - The standard GNU APL keyboard when the "Super" key is held down.
  - A quail-based input method (APL-Z) that allows you to prefix any key with a period (i.e. ".G" results in ⍒).
  - Mouse-2 on a character in the keyboard help buffer (C-c k).

The key features of this mode includes:

  - Eldoc integration
  - Documentation popup for the symbol under point (by pressing C-c s)
  - Keyboard help (C-c k)
  - Function editor in a separate buffer (by typing ∇function or pressing C-c f)
  - Coloured error messages

Any comments or criticisms would be greatly appreciated. Also, if people find this work acceptable, it would be neat to have it included in ELPA eventually.


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