v8.3.0

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Released 2025-09-15

• Improved flag option handling: Reworked the relationship between flag_value
  and default parameters for better consistency:

  • The default parameter value is now preserved as-is and passed directly
    to CLI functions (no more unexpected transformations)
  • Exception: flag options with default=True maintain backward compatibility
    by defaulting to their flag_value
  • The default parameter can now be any type (bool, None, etc.)
  • Fixes inconsistencies reported in: :issue:1992 :issue:2514 :issue:2610
    :issue:3024 :pr:3030

• Allow default to be set on Argument for nargs = -1. :issue:2164
  :pr:3030

• Show correct auto complete value for nargs option in combination with flag
  option :issue:2813

• Show correct auto complete value for nargs option in combination with flag option :issue:2813

• Fix handling of quoted and escaped parameters in Fish autocompletion. :issue:2995 :pr:3013

• Lazily import shutil. :pr:3023

• Properly forward exception information to resources registered with
  click.core.Context.with_resource(). :issue:2447 :pr:3058

• Fix regression related to EOF handling in CliRunner. :issue:2939:pr:2940

v8.2.2

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Released 2025-07-31

• Fix reconciliation of default, flag_value and type parameters for
  flag options, as well as parsing and normalization of environment variables.
  :issue:2952 :pr:2956
• Fix typing issue in BadParameter and MissingParameter exceptions for the
  parameter param_hint that did not allow for a sequence of string where the
  underlying function _join_param_hints allows for it. :issue:2777 :pr:2990
• Use the value of Enum choices to render their default value in help
  screen. Refs :issue:2911 :pr:3004
• Fix completion for the Z shell (zsh) for completion items containing
  colons. :issue:2703 :pr:2846
• Don't include envvar in error hint when not configured. :issue:2971 :pr:2972
• Fix a rare race in click.testing.StreamMixer's finalization that manifested
  as a ValueError on close in a multi-threaded test session.
  :issue:2993 :pr:2991