Sourced from pyparsing's changelog.

Version 3.2.3 - March, 2025

• Fixed bug released in 3.2.2 in which nested_expr could overwrite parse actions for defined content, and could truncate list of items within a nested list. Fixes Issue #600, reported by hoxbro and luisglft, with helpful diag logs and repro code.

Version 3.2.2 - March, 2025

• Released cvt_pyparsing_pep8_names.py conversion utility to upgrade pyparsing-based programs and libraries that use legacy camelCase names to use the new PEP8-compliant snake_case method names. The converter can also be imported into other scripts as

    from pyparsing.tools.cvt_pyparsing_pep8_names import pep8_converter
  

• Fixed bug in nested_expr where nested contents were stripped of whitespace when the default whitespace characters were cleared (raised in this StackOverflow question https://stackoverflow.com/questions/79327649 by Ben Alan). Also addressed bug in resolving PEP8 compliant argument name and legacy argument name.

• Fixed bug in rest_of_line and the underlying Regex class, in which matching a pattern that could match an empty string (such as ".*" or "[A-Z]*" would not raise a ParseException at or beyond the end of the input string. This could cause an infinite parsing loop when parsing rest_of_line at the end of the input string. Reported by user Kylotan, thanks! (Issue #593)

• Enhancements and extra input validation for pyparsing.util.make_compressed_re - see usage in examples/complex_chemical_formulas.py and result in the generated railroad diagram examples/complex_chemical_formulas_diagram.html. Properly escapes characters like "." and "*" that have special meaning in regular expressions.

• Fixed bug in one_of() to properly escape characters that are regular expression markers (such as '*', '+', '?', etc.) before building the internal regex.

• Better exception message for MatchFirst and Or expressions, showing all alternatives rather than just the first one. Fixes Issue #592, reported by Focke, thanks!

• Added return type annotation of "-> None" for all __init__() methods, to satisfy mypy --strict type checking. PR submitted by FeRD, thank you!

• Added optional argument show_hidden to create_diagram to show elements that are used internally by pyparsing, but are not part of the actual parser grammar. For instance, the Tag class can insert values into the parsed results but it does not actually parse any input, so by default it is not included in a railroad diagram. By calling create_diagram with show_hidden = True, these internal elements will be included. (You can see this in the tag_metadata.py script in the examples directory.)

• Fixed bug in number_words.py example. Also added ebnf_number_words.py to demonstrate

... (truncated)

• 4dace94 Fixed bug in nested_expr introduced in 3.2.2, fixes #600
• 3b3ca8d Prep for 3.2.3 development
• b0a8be6 Prep for 3.2.2 release
• f3abd5e Changes to adventureEngine.py to make a better diagram
• 0a030b4 Some code cleanup, black
• 52ed224 Update docs with PEP8 names
• 274ed98 Fix one_of to use re.escape when merging strings into a regular expression
• 0f4c884 Add non_capturing_groups argument and extra input validation to `pyparsing....
• 67d3078 Some code cleanup in Forward._generateDefaultName and srange
• 28ef77e Rewrite to remove return from finally block (Issue #578)
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