Re: Changing the APL prompt ?

[Dr . Jürgen Sauermann]

    Hi Emmanuel,
    
    you can change the ⍞-input prompt but not the immediate execution
    prompt.
    An example (adopted from the IBM APL2 language manual):
    
          
          ∇Z←INPUT PROMPT
      [1] ⍞←PROMPT ◊ Z←⍞
      [2] ∇
            
            INPUT 'MY-Prompt: '
      MY-Prompt: 42
                 42
      
    Changing the immediate execution is problematic because
    it differs in different situations, for example in multi-line input:
    
        Z←"""
      →      Line One
      →      Line Two
      →      """
            
            8 ⎕CR Z
      ┌→────────────────────┐
      │┌→───────┐ ┌→───────┐│
      ││Line One│ │Line Two││
      │└────────┘ └────────┘│
      └ϵ────────────────────┘
      
    
    Best Regards,
    Jürgen

On 6/14/23 21:56, Emmanuel Charpentier wrote:

Dear list,

Is there a way to change the APL standard prompt (i. e. 6 spaces at the start of a line) ?

I'd like to develop two interfaces that may, IMHO, improve the usefulness of APL in today's use :

• A Jupyter kernel, allowing its use in Jupyter notebooks,
• An org-babel driver, allowing its use in Org documents.

Both are (semi-)trivial to write (thoanks to expect and pexpect), except for recognition of "end-of-output", which might be eased by assigning a predetermined random value to the (final) prompt. QuadEB and Quad-EA come to mind...

Any hint ?