chore(deps): bump click from 8.4.1 to 8.4.2

[dependabot]

Bumps click from 8.4.1 to 8.4.2.

Release notes

Sourced from click's releases.

8.4.2

This is the Click 8.4.1 fix release, which fixes bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/click/8.4.2/ Changes: https://click.palletsprojects.com/page/changes/#version-8-4-2 Milestone: https://github.com/pallets/click/milestone/34

• Fix Fish shell completion broken in 8.4.0 by #3126. Newlines and tabs in option help text are now escaped, keeping the original completion format while still supporting multi-line help. #3502 #3043 #3504 #3508
• Deprecated commands and options with empty or missing help text no longer render a stray leading space before the (DEPRECATED) label. #3509
• A {class}Group with invoke_without_command=True marks its subcommand as optional in the usage help, showing [COMMAND] instead of COMMAND. #3059 #3507
• echo_via_pager flushes after each write, so passing a generator streams output to the pager incrementally instead of staying hidden until the pipe buffer fills. #3242 #2542 #3534
• echo_via_pager and get_pager_file no longer close a borrowed stdout stream when no external pager runs, completing the partial I/O operation on closed file fix from #3482. #3449 #3533
• Fix CLI usage symopsis for optional arguments producing double square brackets [[a|b|c]]... whose type already brackets their metavar. #3578
• {func}version_option resolves a package_name that does not match an installed distribution as an import (top-level module) name via {func}importlib.metadata.packages_distributions. Packages whose top-level module name differs from their distribution name (PIL vs Pillow, jwt vs PyJWT) no longer raise RuntimeError out of the box. #2331 #1884 #3125 #3582

Changelog

Sourced from click's changelog.

Version 8.4.2

Released 2026-06-24

• Fix Fish shell completion broken in 8.4.0 by {pr}3126. Newlines and tabs in option help text are now escaped, keeping the original completion format while still supporting multi-line help. {issue}3502 {issue}3043 {pr}3504 {pr}3508
• Deprecated commands and options with empty or missing help text no longer render a stray leading space before the (DEPRECATED) label. {pr}3509
• A {class}Group with invoke_without_command=True marks its subcommand as optional in the usage help, showing [COMMAND] instead of COMMAND. {issue}3059 {pr}3507
• echo_via_pager flushes after each write, so passing a generator streams output to the pager incrementally instead of staying hidden until the pipe buffer fills. {issue}3242 {issue}2542 {pr}3534
• echo_via_pager and get_pager_file no longer close a borrowed stdout stream when no external pager runs, completing the partial I/O operation on closed file fix from {pr}3482. {issue}3449 {pr}3533
• Fix CLI usage symopsis for optional arguments producing double square brackets [[a|b|c]]... whose type already brackets their metavar. {pr}3578
• {func}version_option resolves a package_name that does not match an installed distribution as an import (top-level module) name via {func}importlib.metadata.packages_distributions. Packages whose top-level module name differs from their distribution name (PIL vs Pillow, jwt vs PyJWT) no longer raise RuntimeError out of the box. {issue}2331 {issue}1884 {issue}3125 {pr}3582

Commits

• b2e30a1 Release version 8.4.2
• 7a16b20 Fix package_name resolution when module differs from distribution name (#3582)
• bec5928 Fix package_name resolution when top-level module differs from distribution...
• 916883a Fix tests to not rely on -Wdefault option (#3591)
• 09195f6 Fix double-bracketing of choices in synopsis (#3578)
• 1557e26 Check for warning exception with idiomatic context manager
• d9ff133 Static typing improvements in click.shell_completion (#3460)
• 762c97e Fix double-bracketing of choices in synopsis
• 8929d39 Convert changes to markdown. (#3559)
• 237be50 Move changes headings down a level.
• Additional commits viewable in compare view

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[lab700xdev]

Verified locally on top of current main (i.e. with the setuptools 83.0.0 security bump from #74 also applied, which this branch predates):

• Full suite green: 253 passed, coverage 88.64% (gate 85%).
• CLI output diffed against a pre-bump baseline — --help/--version/info, scan in terminal/markdown/JSON/SPDX form, --strict, --lint, --no-fail-on-risk, diff, plus the missing-target and bad-flag (usage error) paths: byte-identical, exit codes unchanged.

click is the argument parser underneath typer, so the bad-flag/usage-error path was included deliberately; it renders identically. 8.4.2 stays inside the existing click = "<8.5.0" constraint, so no pyproject change is needed.