fix(cli): always show shell command description or actual command

[jacob314]

Summary

To repro:
Run this shell command and verify that with this fix you now see output.

Fixes #24775

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request improves the user experience of the CLI by ensuring that shell command descriptions are always informative. By defaulting to the raw command when a custom description is missing or invalid, it prevents empty or unhelpful labels from appearing in the interface.

Highlights

• Improved Shell Command Descriptions: Updated the getDescription method to ensure that shell command invocations always provide a meaningful description, falling back to the actual command string if the provided description is empty or contains only whitespace.
• Added Unit Tests: Included new test cases in shell.test.ts to verify that getDescription correctly handles valid descriptions, empty strings, and whitespace-only strings.

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[gemini-cli]

Hi @jacob314, thank you so much for your contribution to Gemini CLI! We really appreciate the time and effort you've put into this.

We're making some updates to our contribution process to improve how we track and review changes. Please take a moment to review our recent discussion post: Improving Our Contribution Process & Introducing New Guidelines.

Key Update: Starting January 26, 2026, the Gemini CLI project will require all pull requests to be associated with an existing issue. Any pull requests not linked to an issue by that date will be automatically closed.

Thank you for your understanding and for being a part of our community!

[github-actions]

Size Change: +46 B (0%)

Total Size: 34 MB

Filename	Size	Change
./bundle/chunk-5SBZKKH2.js	0 B	-3.15 MB (removed)	🏆
./bundle/chunk-7PQZJC44.js	0 B	-14.8 MB (removed)	🏆
./bundle/core-SL3PPM2S.js	0 B	-45.4 kB (removed)	🏆
./bundle/devtoolsService-T2IXWMAU.js	0 B	-28.4 kB (removed)	🏆
./bundle/interactiveCli-H6APCY53.js	0 B	-1.64 MB (removed)	🏆
./bundle/oauth2-provider-QRX3WL26.js	0 B	-9.16 kB (removed)	🏆
./bundle/chunk-3SNI624V.js	14.8 MB	+14.8 MB (new file)	🆕
./bundle/chunk-VM4LSXEM.js	3.15 MB	+3.15 MB (new file)	🆕
./bundle/core-QQD6ADIH.js	45.4 kB	+45.4 kB (new file)	🆕
./bundle/devtoolsService-C52YOC5C.js	28.4 kB	+28.4 kB (new file)	🆕
./bundle/interactiveCli-Z5WD3CRS.js	1.64 MB	+1.64 MB (new file)	🆕
./bundle/oauth2-provider-B2EDY5ZK.js	9.16 kB	+9.16 kB (new file)	🆕

ℹ️ View Unchanged

Filename	Size
./bundle/bundled/third_party/index.js	8 MB
./bundle/chunk-34MYV7JD.js	2.45 kB
./bundle/chunk-5AUYMPVF.js	858 B
./bundle/chunk-5PS3AYFU.js	1.18 kB
./bundle/chunk-664ZODQF.js	124 kB
./bundle/chunk-DAHVX5MI.js	206 kB
./bundle/chunk-IUUIT4SU.js	56.5 kB
./bundle/chunk-RJTRUG2J.js	39.8 kB
./bundle/chunk-Z34XA6FT.js	1.96 MB
./bundle/devtools-36NN55EP.js	696 kB
./bundle/dist-T73EYRDX.js	356 B
./bundle/events-XB7DADIJ.js	418 B
./bundle/gemini.js	553 kB
./bundle/getMachineId-bsd-TXG52NKR.js	1.55 kB
./bundle/getMachineId-darwin-7OE4DDZ6.js	1.55 kB
./bundle/getMachineId-linux-SHIFKOOX.js	1.34 kB
./bundle/getMachineId-unsupported-5U5DOEYY.js	1.06 kB
./bundle/getMachineId-win-6KLLGOI4.js	1.72 kB
./bundle/memoryDiscovery-PYBLKP7S.js	980 B
./bundle/multipart-parser-KPBZEGQU.js	11.7 kB
./bundle/node_modules/@google/gemini-cli-devtools/dist/client/main.js	222 kB
./bundle/node_modules/@google/gemini-cli-devtools/dist/src/_client-assets.js	229 kB
./bundle/node_modules/@google/gemini-cli-devtools/dist/src/index.js	13.4 kB
./bundle/node_modules/@google/gemini-cli-devtools/dist/src/types.js	132 B
./bundle/sandbox-macos-permissive-open.sb	890 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB
./bundle/sandbox-macos-strict-open.sb	4.82 kB
./bundle/sandbox-macos-strict-proxied.sb	5.02 kB
./bundle/src-QVCVGIUX.js	47 kB
./bundle/tree-sitter-7U6MW5PS.js	274 kB
./bundle/tree-sitter-bash-34ZGLXVX.js	1.84 MB

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[gemini-code-assist]

Code Review

This pull request updates the getDescription method in the ShellToolInvocation class to return the raw command if the description is missing, empty, or contains only whitespace. Corresponding unit tests have been added to verify this behavior. I have no feedback to provide.

[github-actions]

✅ 61 tests passed successfully on gemini-3-flash-preview.

🧠 Model Steering Guidance

This PR modifies files that affect the model's behavior (prompts, tools, or instructions).

• ⚠️ Consider adding Evals: No behavioral evaluations (evals/*.eval.ts) were added or updated in this PR. Consider adding a test case to verify the new behavior and prevent regressions.
• 🚀 Maintainer Reminder: Please ensure that these changes do not regress results on benchmark evals before merging.

---

This is an automated guidance message triggered by steering logic signatures.

[github-actions]

🛑 Action Required: Evaluation Approval

Steering changes have been detected in this PR. To prevent regressions, a maintainer must approve the evaluation run before this PR can be merged.

Maintainers:

1. Go to the Workflow Run Summary.
2. Click the yellow 'Review deployments' button.
3. Select the 'eval-gate' environment and click 'Approve'.

Once approved, the evaluation results will be posted here automatically.