More Design and Planning for My "Xpander" [Abbv] Generator

 Initial Draft ideas for  special Xpander cases

The P4=(~)P3=(`) sequence:

In this case consideration, the user types the following sequence (each square bracketed [item] is a keystroke while curly bracket is multi-keys):

[space] {script name}
[P4] [P3]
[script type] {optional params k-v key name} [space]

To do this, the users hits Shift with the left thumb and Tilde with index to invoke [P4]  before letting go of Shift and hitting same Tilde key for generating at least a first [P3]  (there can be more P3's to follow) 

{script name} is one or more characters and specifies the name of a script to be run but does not include the registered file extension of the script (e.g. the (dot).py extension)

Before the {script name} there can be a null, or a space or a line feed (LFCR)
(Note: The null case occurs when there is no space to the left of the {script name}. it starts at slice index = 0 )

(Additional note: More "Edge" cases: What if [P4] is last char of input string? What if there is no [script type] after  [P3] ?? )

[script type] provides the registered file extension in the form of a single char abbreviation (an abv of the pgm type):

    a = 1 = Auto Hot Key (AHK) == execute an AHK script
    b = 2 = Batch (BAT)
    c= 3 = Chat GPT search ?????
    d= 4 = ?????
    t= 5 = Notepad for typing a text (txt) note
    p = 6 = Notepad++ for editing a code file
    v = 7 = VS Code for editing a code file

    g= google search
    j = google image search
    w = Wikipedia search

    m = 0 = h = ? = help / main menu / or followed by sub-menu specifier
 

{optional params k-v key name} = name of a key part of a dictionary k-v pair for extracting a set parameters to be used by the called script   

[P3] = run as a Python file (if the user hits P3 twice after the [P4] ) = runs a (dot).py file
    [P3]  [P3]= ?= runs PyCharm ?? 
        [P3]  [P3] [P3] = ?= runs XXXX (if user hits P3 thrice after the [P4] ) = ???

TO BE CONTINUED ....

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