Working with Forth

  1. What is the PF console ?
  2. Using a text editor
    1. nano
    1. vim
    1. Emacs
      1. Emacs - pf binding
      2. A few commands
      3. PF in emacs
  6. The keyboard as interface
    1. Hotkey-mode

What is the PF console ?

The PF console is a simple programming environment in which the user can enter commands. When you start PF from a terminal you immediately end up in the interactive PF console where you can start typing some Forth. When you press enter, these commands are read and interpreted: for each symbol the associated code is executed, and other values are loaded on the data stack.

During the Introduction to Forth you have already played a bit with the console. The PF console provides a few useful features:

  • History: What you have typed can be accessed back using the up arrows
  • Word Completion: When you start writing a word, hitting "TAB" will propose you a selection of matches found in the PF dictionary
  • Help: If you type "help" you will be guided through the integrated reference system.
  • Dictionnary list: all the available commands can be listed if you type ".words" or "TAB TAB"

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