update version to 4.2 · Pull Request !4 · src-openEuler/python-empy

[4.2] – 2024-08-25
Added
Module support.
Support for disabling output and switching markup dynamically.
Support for reconfiguring stdin/stdout at runtime.
Support for repeated curly braces with functional expressions (e.g., @f{{...}}).
Backward-compatible Case abstraction for @[match] markup.
Additional preprocessing and postprocessing commands via new command-line options.
[4.1] – 2024-03-24
Added
Extension markup syntax: @((...)), @[[...]], @{{...}}, @<...>, etc., with custom callbacks retained for backward compatibility.
@[match] control structure support.
Interpreter cores for overriding default interpreter behavior.
More command-line option toggles.
Notion of verbose vs. brief error reporting.
Uniform error message formatting.
Various documentation updates.
[4.0.1] – 2023-12-24
Added
Root context argument, serializers, and idents to interpreter.
--no-none-symbol command-line option.
Container support class in emlib.
Support for string-based errors.
Error dispatchers and cleaner error handling (ignoreErrors).
Comments support in “clean” controls.
Changed
setContext... methods now also modify the currents stack.
expand method/function now raises exceptions directly to caller.
Removed need for separate FullContext class; merged into Context.
Context line markup @!... no longer pre-adjusts line number.
Non-standard proxy attributes and methods are now hidden.
Fixed
Inconsistent stack usage in expand method.
Better backward compatibility for expand function and CompatibilityError.
Clearer error messages for removed literal markup (e.g., @), @], @}).
Other
Updated and expanded test suite.
Help subsystem and documentation improvements.
[4.0.0] – 2023-11-29
Major modernization and architectural overhaul

Added
Inline comments: @*...*.
Backquote literals: @...``.
Chained if-then-else expressions.
Functional expressions: @f{...}.
Full control markup support: @[try], @[while ...], @[with ...], @[defined ...].
Stringized and multiline significators.
Named escapes: @\^{...}.
Diacritics support: @^....
Icons: @|...|.
Emoji support: @:...:.
Configurations system.
Full Unicode and file buffering support.
Reference-counted proxy objects.
Hooks to override interpreter behavior.
Extensive built-in help system (emhelp).
Dedicated documentation module (emdoc) and rewritten docs.
Changed
Relicensed project to BSD.
Interpreter constructor now requires keyword-only arguments.
Replaced “fully buffered files” behavior with -d / --delete-on-error flag.
Cleaned up environment variable usage.
Replaced @repr markup with emoji markup.
Custom markup @<...> now parsed more sensibly.
Removed filter shortcuts.
Context now tracks column and character count (not just line).
Auxiliary classes moved to new emlib module.
Use argv instead of argc for interpreter arguments.
Context line markup @!... no longer adjusts line number preemptively.
Removed
Literal markups: @), @], @}.
Other
Numerous bug fixes.
Comprehensive documentation rewrite and expansion.
See “Full list of changes between EmPy 3.x and 4.0” for complete migration details.

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