feat: Add /copyprompt command to copy prompts without formatting

[sinanptm]

TLDR

This pull request introduces a new /copyprompt command to address the issue of copying prompts with unwanted terminal formatting. This command allows users to easily copy the last sent prompt to their clipboard as raw text, without any styling or indentation.

Dive Deeper

Previously, when a user tried to copy a prompt from the terminal, it would include formatting that made it difficult to reuse the prompt. To solve this, I have implemented a new /copyprompt command that specifically extracts the raw text of the last user-sent prompt and copies it to the clipboard. This ensures that the user gets a clean, usable version of the prompt without any manual cleanup.

If this /copyprompt command is deemed necessary, I will update the documentation to include details on its usage.

Reviewer Test Plan

To test this change, please follow these steps:

1. Run the Gemini CLI and send a prompt.
2. Run the /copyprompt command.
3. Paste the content of the clipboard into a text editor to verify that the prompt is copied without any terminal formatting.

Testing Matrix

	🍏	🪟	🐧
npm run	✅	❓	❓
npx	✅	❓	❓
Docker	❓	❓	❓
Podman	❓	-	-
Seatbelt	❓	-	-

Linked issues / bugs

Resolves #5556

[gemini-code-assist]

Summary of Changes

Hello @sinanptm, 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 enhances the CLI's usability by adding a new /copyprompt command. This command provides a streamlined way for users to retrieve and copy their previous prompts without any formatting issues, improving the overall user experience. The changes include the command's core logic, its registration within the application, and a comprehensive suite of unit tests to ensure its reliability.

Highlights

• New Feature: /copyprompt Command: I've introduced a new /copyprompt command that allows users to copy their last sent prompt to the clipboard as raw text, addressing issues with unwanted terminal formatting when copying directly.
• Command Integration: The new /copyprompt command has been integrated into the CLI's built-in command loader, making it available for immediate use by users.
• Comprehensive Testing: I've added a dedicated test file for the /copyprompt command, covering various scenarios including handling empty history, extracting text from multi-part messages, filtering non-text content, and robust error handling for clipboard operations.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point in your pull request via creating an issue comment (i.e. comment on the pull request page) using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in issue comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments or fill out our survey to provide feedback.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request introduces a new /copyprompt command to copy prompts without formatting. There's a potential runtime error if lastUserMessage.parts is null or undefined, which can be prevented by using the nullish coalescing operator to provide an empty array as a fallback.

[sinanptm]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a /copyprompt command to copy the last user prompt. The implementation is well-tested and covers various edge cases. I've identified a performance issue in how the last user message is retrieved from the chat history, which could be impactful for long conversations. My suggestion provides a more efficient way to do this by iterating backwards through the history, improving performance by reducing memory allocation.