[HaraldNordgren]

After a revision bump, the brew info headline drops the revision from the upgrade target, so it looks like an upgrade to the version already installed. It now uses pkg_version, matching the Installed Versions line and what brew upgrade installs.

To reproduce, run brew info git with git 2.56.0 installed (the formula is now revision 1).

Before:

$ brew info git
==> git: 2.56.0 → stable 2.56.0, HEAD
...
==> Installed Versions
git 2.56.0 → 2.56.0_1 (1,734 files, 66.9MB) [Linked]

After:

$ brew info git
==> git: 2.56.0 → stable 2.56.0_1, HEAD
...
==> Installed Versions
git 2.56.0 → 2.56.0_1 (1,734 files, 66.9MB) [Linked]

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Claude Code (Claude Opus 5.5) traced the cause, wrote the fix and spec change and drafted this description. Verified with brew typecheck, brew style on the changed files, brew tests --only=cmd/info (the updated spec fails on main and passes with the fix) and the brew info git before/after above, captured on macOS 12.

Summary by CodeRabbit

• Bug Fixes
  • Corrected formula information when an installed formula shadows the requested formula, so the reported installation status and installed kegs are accurate.
  • Updated outdated-formula headlines to show the installed package version alongside the stable version. This makes the version details shown by the info command clearer when an installed formula is behind the stable release.

[coderabbitai]

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📝 Walkthrough

info_formula now resolves a shadowing installed formula before calculating installation state. When the formula is installed and outdated, the output uses its package version as the stable version. The headline test now covers a formula with revision 1.

Changes: Formula info display

Layer / File(s)	Summary
Installed state and version display Library/Homebrew/cmd/info.rb, Library/Homebrew/test/cmd/info_spec.rb	info_formula resolves the shadowing installed formula before selecting kegs and calculating installation state. For an installed, outdated formula, the stable version uses the package version. The test checks the headline with installed version 0.1 and stable version 0.1_1.

Priority: ⬇️ Low

Merge Risk: 🔵 Low · up to b3cb2

When an installed formula’s alias target changes, brew info can show the old package revision as the upgrade target even though brew upgrade follows the new target. This is a limited display issue; the upgrade behavior itself is unaffected.

Pre-merge checks: 4

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly identifies the main change: brew info now shows the revision in the headline upgrade version.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 1

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• Library/Homebrew/cmd/info.rb
• Library/Homebrew/test/cmd/info_spec.rb

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[MikeMcQuaid]

Thanks!