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.

Author: rocky

.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 <rb@dustyfeet.com>
+#   Copyright (C) 2020-2022, 2024, 2025 Rocky Bernstein <rb@dustyfeet.com>
 
 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-gnu.gif

@@ -1,57 +1,51 @@
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-[16.032643, "o", "\u001b[32mIn[\u001b[1m2\u001b[22m]:= \u001b[39m"]
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-[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[%]"]
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-[19.11296, "o", "\b\u001b[K"]
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-[20.533847, "o", "Integrate[Sin[θ], {\\[Theta], 0, 1}]"]
-[20.845902, "o", "\b"]
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-[22.846123, "o", "P1}]\b\b\b"]
-[23.278141, "o", "i1}]\b\b\b"]
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-[24.533706, "o", "\u001b[C\u001b[C"]
-[25.318366, "o", "\r\n"]
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-[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"]
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