Go over screenshots (#94)

* Adjust style="" to do the right thing. and squelch "set:raw" error in trying set PygmentsStyle
* Add gif for prompt-toolkit. Revise GNU gif.

.gitignore

@@ -25,13 +25,15 @@
 /.eggs
 /.hypothesis
 /.mypy_cache
+/.pyodide-xbuildenv*
 /.pytest_cache
 /.python-version
 /.tox
 /.venv*/*
 /ChangeLog
 /ChangeLog.orig
 /ChangeLog.rej
+/ChangeLog.spell-corrected
 /PKG-INFO
 /README
 /README.html

mathicsscript/autoload/settings.m

@@ -16,10 +16,10 @@
 
 Settings`$ShowFullFormInput = False
 
-(* This is a workarund for a bug in mathicsscript of mathics-core.
+(* This is a workaround for a bug in mathicsscript of mathics-core.
  Remove this and we get error:
  Set::setraw: Cannot assign to raw object colorful. *)
-Settings`$PygmentsStyle = False
+Settings`$PygmentsStyle = Null
 
 Settings`$PygmentsStyle::usage = "This variable sets the Pygments style used to colorize output. The value should be a string.
 

mathicsscript/termshell.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-#   Copyright (C) 2020-2022, 2024 Rocky Bernstein <[email protected]>
+#   Copyright (C) 2020-2022, 2024, 2025 Rocky Bernstein <[email protected]>
 
 from columnize import columnize
 
@@ -67,7 +67,7 @@
 SymbolPygmentsStylesAvailable = Symbol("Settings`PygmentsStylesAvailable")
 
 
-def is_pygments_style(style: str):
+def is_pygments_style(style: str) -> bool:
     if style not in ALL_PYGMENTS_STYLES:
         print(f"Pygments style name '{style}' not found.")
         print(f"Style names are:\n{columnize(ALL_PYGMENTS_STYLES)}")
@@ -154,7 +154,7 @@ def __init__(
         )
 
     def change_pygments_style(self, style: str):
-        if style == self.pygments_style:
+        if not style or style == self.pygments_style:
             return False
         if is_pygments_style(style):
             self.terminal_formatter = Terminal256Formatter(style=style)

screenshots/README.md

@@ -1,6 +1,6 @@
 ## Character entry and highlighting
 
-![demo session - part 1](mathicsscript1.gif)
+![demo session - part 1](mathicsscript1-gnu.gif)
 
 ### Demo Notes
 
@@ -12,9 +12,7 @@ I hit the _Tab_ key after `Inte` to get the completions
 
 Ater adding `gr` though there was just one completion: `Integrate`.
 
-To get the theta (θ), I entered: _escape_ theta _escape_.
-
-The next time around I entered `\[The` and the _Tab_ key.
+To get the theta (θ), I entered: _escape_ .Theta _escape_.
 
 The orange color is in output is the color the Pygments default dark style `paraiso-dark` uses for numbers.
 
@@ -43,7 +41,7 @@ The "cast" screenshot was made with asciienema and then running through `asciica
 For example:
 
 ```
-$ asciinema play mathicsscript1.caste
+$ asciinema play mathicsscript1.cast
 ```
 
 You can edit the `.cast` files. The specific commands used after this were:

screenshots/mathicsscript1.cast

@@ -1,57 +1,51 @@
-{"version": 2, "width": 93, "height": 37, "timestamp": 1603631223, "env": {"SHELL": "/bin/bash", "TERM": "xterm-256color"}}
-[0.005791, "o", "\u001b[33m$ \u001b[0m"]
-[0.502157, "o", "math"]
-[1.062212, "o", "ics"]
-[1.502028, "o", "script"]
-[2.034574, "o", "\r\n"]
-[2.82522, "o", "\r\nMathicsscript: 8.0.0, Mathics 8.0.0\r\non CPython 3.12.8 (main, Dec  9 2024, 11:38:23) [GCC 13.2.0]\r\nusing SymPy 1.13.3, mpmath 1.130, cython 3.0.11\r\n\r\nCopyright (C) 2011-2025 The Mathics Team.\r\nThis program comes with ABSOLUTELY NO WARRANTY.\r\nThis is free software, and you are welcome to redistribute it\r\nunder certain conditions.\r\nSee the documentation for the full license.\r\n\r\nQuit by pressing CONTROL-D\r\n\r\n"]
-[2.825361, "o", "\u001b[32mIn[\u001b[1m1\u001b[22m]:= \u001b[39m"]
-[3.695122, "o", "I"]
-[3.967145, "o", "n"]
-[4.726812, "o", "t"]
-[5.007269, "o", "e"]
-[5.335371, "o", "g"]
-[6.12223, "o", "\u0007"]
-[6.815785, "o", "\r\nInteger          IntegerExponent  IntegerQ         IntegerString    Integrate\r\nIntegerDigits    IntegerLength    IntegerReverse   Integers         \r\n\u001b[32mIn[\u001b[1m1\u001b[22m]:= \u001b[39mInteg"]
-[6.871228, "o", "r"]
-[7.000000, "o", "\u0007"]
-[7.520555, "o", "ate"]
-[7.675848, "o", "["]
-[8.031685, "o", "Sin["]
-[9.656405, "o", "θ"]
-[10.25736, "o", "]"]
-[10.817809, "o", ", "]
-[11.01777, "o", "{"]
-[11.737943, "o", "\\"]
-[11.773814, "o", "["]
-[11.961852, "o", "The"]
-[12.458474, "o", "\u0007"]
-[13.386332, "o", "ta"]
-[13.562337, "o", ", "]
-[14.130843, "o", "0"]
-[14.426842, "o", ", 1"]
-[15.090745, "o", "}]"]
-[15.555296, "o", "\r\n"]
-[15.632594, "o", "\u001b[31mOut[\u001b[1m1\u001b[22m]= \u001b[39m\u001b[38;5;208m1\u001b[39m\u001b[38;5;7m \u001b[39m\u001b[38;5;79m-\u001b[39m\u001b[38;5;7m \u001b[39m\u001b[38;5;7mCos\u001b[39m\u001b[38;5;7m[\u001b[39m\u001b[38;5;208m1\u001b[39m\u001b[38;5;7m]\u001b[39m\r\n\r\n"]
-[16.032643, "o", "\u001b[32mIn[\u001b[1m2\u001b[22m]:= \u001b[39m"]
-[17.028024, "o", "N[%]"]
-[17.435874, "o", "\r\n"]
-[17.443821, "o", "\u001b[31mOut[\u001b[1m2\u001b[22m]= \u001b[39m\u001b[38;5;208m0.459698\u001b[39m\r\n\r\n"]
-[17.443857, "o", "\u001b[32mIn[\u001b[1m3\u001b[22m]:= \u001b[39m"]
-[17.436374, "o", "N[%]"]
-[18.988696, "o", "\b\b\b\bIntegrate[Sin[θ], {θ, 0, 1}]"]
-[19.11296, "o", "\b\u001b[K"]
-[19.445726, "o", "\r\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[K"]
-[20.533847, "o", "Integrate[Sin[θ], {\\[Theta], 0, 1}]"]
-[20.845902, "o", "\b"]
-[21.069995, "o", "\b"]
-[21.222015, "o", "\b"]
-[22.846123, "o", "P1}]\b\b\b"]
-[23.278141, "o", "i1}]\b\b\b"]
-[23.629824, "o", "\u001b[1P}]\b\b"]
-[24.533706, "o", "\u001b[C\u001b[C"]
-[25.318366, "o", "\r\n"]
-[25.337909, "o", "\u001b[31mOut[\u001b[1m3\u001b[22m]= \u001b[39m\u001b[38;5;208m2\u001b[39m\r\n\r\n"]
-[25.337952, "o", "\u001b[32mIn[\u001b[1m4\u001b[22m]:= \u001b[39m"]
-[26.477806, "o", "\r\n\r\nGoodbye!\r\n\r\n"]
-[26.480035, "o", "\u001b[0m"]
+{"version": 2, "width": 80, "height": 24, "timestamp": 1738279347, "env": {"SHELL": "/bin/bash", "TERM": "xterm-256color"}}
+[0.004157, "o", "\u001b[?2004h\u001b[33m$ \u001b[0m"]
+[1.358551, "o", "\u001b[H\u001b[2J\u001b[33m$ \u001b[0m"]
+[1.798216, "o", "mathicsscript --readline GNU"]
+[2.773018, "o", "\r\n\u001b[?2004l\r"]
+[3.447708, "o", "\r\nMathicscript: 8.0.0, Mathics 8.0.0\r\non CPython 3.12.8 (main, Dec  9 2024, 11:38:23) [GCC 13.2.0]\r\n\r\nUsing:\r\nSymPy 1.13.3, mpmath 1.3.0, numpy 1.26.4\r\ncython 3.0.11, matplotlib 3.9.3,\r\nAsymptote version 2.95\r\n\r\nCopyright (C) 2011-2025 The Mathics3 Team.\r\nThis program comes with ABSOLUTELY NO WARRANTY.\r\nThis is free software, and you are welcome to redistribute it\r\nunder certain conditions.\r\nSee the documentation for the full license.\r\n\r\nQuit by evaluating Quit[] or by pressing CONTROL-D.\r\n\r\n"]
+[3.447822, "o", "\u001b[32mIn[\u001b[1m1\u001b[22m]:= \u001b[39m"]
+[5.680936, "o", "I"]
+[6.08154, "o", "n"]
+[6.537755, "o", "t"]
+[7.009703, "o", "e"]
+[8.050647, "o", "g"]
+[8.703203, "o", "\u0007"]
+[9.172915, "o", "\r\nInteger            IntegerLength      IntegerQ           Integers\r\nIntegerDigits      IntegerPart        IntegerReverse     Integrate\r\nIntegerExponent    IntegerPartitions  IntegerString      \r\n\u001b[32mIn[\u001b[1m1\u001b[22m]:= \u001b[39mInteg"]
+[10.30575, "o", "r"]
+[11.091369, "o", "ate"]
+[12.09041, "o", "["]
+[14.5699, "o", "S"]
+[14.856797, "o", "i"]
+[15.05787, "o", "n"]
+[15.321605, "o", "["]
+[16.514906, "o", "θ̣"]
+[16.977232, "o", "]"]
+[17.354395, "o", ","]
+[17.448072, "o", " "]
+[18.06578, "o", "{"]
+[22.489797, "o", "θ̣"]
+[23.102821, "o", ","]
+[23.175574, "o", " "]
+[23.455224, "o", "0"]
+[23.697182, "o", ","]
+[23.776832, "o", " "]
+[24.353501, "o", "1"]
+[24.89733, "o", "}"]
+[25.263849, "o", "]"]
+[28.497772, "o", "\r\n"]
+[30.567943, "o", "\u001b[31mOut[\u001b[1m1\u001b[22m]\u001b[39m= \u001b[38;5;57;01m1\u001b[39;00m\u001b[38;5;250m \u001b[39m\u001b[38;5;236m-\u001b[39m\u001b[38;5;250m \u001b[39m\u001b[38;5;25;01mCos\u001b[39;00m[\u001b[38;5;57;01m1\u001b[39;00m]\r\n\r\n\u001b[32mIn[\u001b[1m2\u001b[22m]:= \u001b[39m"]
+[33.001598, "o", "%"]
+[33.880615, "o", " "]
+[34.194293, "o", "/"]
+[34.366569, "o", "/"]
+[34.435965, "o", " "]
+[34.421543, "o", "N"]
+[35.819642, "o", "\r\n"]
+[35.83116, "o", "\u001b[31mOut[\u001b[1m2\u001b[22m]\u001b[39m= \u001b[38;5;57;01m0.459698\u001b[39;00m\r\n\r\n"]
+[35.831283, "o", "\u001b[32mIn[\u001b[1m3\u001b[22m]:= \u001b[39m"]
+[36.001598, "o", "Quit[]"]
+[36.819642, "o", "\r\n"]
+[37.713122, "o", "\r\n\r\nGoodbye!\r\n\r\n"]
+[37.714901, "o", "\u001b[0m"]
+[38.073713, "o", "\u001b[?2004l\r\r\n"]