[hyuraku]

Formulary.load_formula warns when a formula prints to stdout while loading, but does not say where to report it. This addresses the TODO from #20226.

The warning now includes the tap's issues URL when available, using the appropriate message for official and third-party taps. Otherwise, the warning remains unchanged.

Warning: Formula foo attempted to print the following while being loaded:
Hello from the formula
Please report this issue:
  https://github.com/Homebrew/homebrew-core/issues

I kept this as a warning rather than an error because raising from ensure would prevent otherwise loadable formulae from loading. The suggestion in #20226 also ended with a warning shown to the user.

Added a test for the homebrew/core issues URL.

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• I did not use AI/LLM to create this PR, or I disclosed the tool/model below and reviewed its output; I did not attribute commits to AI and will answer maintainer questions and review comments myself without AI/LLM.

Claude Code helped me pick this TODO, wrote the test and drafted this description.
I wrote the fix myself, reviewed the change and ran brew lgtm locally.

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[MikeMcQuaid]

Great work!

[Copilot]

Copilot review overview

🟡 Changes recommended

Add coverage and message assertions for the third-party tap branch.

Review effort: Lite
Findings: 1

Open (1)

• Add regression coverage for third-party tap reporting message · New

What changed in this PR

Updates formula-load warnings to include the relevant tap’s issue-reporting URL.

Changes:

• Adds official and third-party tap guidance to warnings.
• Adds regression coverage for Homebrew Core.

File	Changes
Library/​Homebrew/​test/​formulary_spec.rb	Tests the Homebrew Core issue URL.
Library/​Homebrew/​formulary.rb	Adds tap-specific issue guidance to load warnings.

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