Question 1

How do I update a gem with gemdiff and commit the changes?

Accepted Answer

Use `gemdiff update [gem-name]`; it runs bundle update, shows a git diff preview, and prompts you to commit with a message that includes the compare URL. This automates the entire update and commit workflow in one command.

Question 2

gemdiff vs dependabot: which is better for Ruby gem updates?

Accepted Answer

gemdiff is a command-line tool for manual, interactive review and update with git integration, ideal for developers who want control. Dependabot is an automated service that creates pull requests, better for teams wanting hands-off updates. Choose based on your preference for automation versus transparency.

Question 3

What if gemdiff can't find a gem's GitHub repository?

Accepted Answer

It may be hosted elsewhere or lack a GitHub URL in its gemspec. The README suggests encouraging maintainers to add it or submitting a pull request to support other hosts, but currently, gemdiff only works with GitHub.

Question 4

How to compare specific gem versions without using Bundler?

Accepted Answer

Use `gemdiff compare [gem] [old-version] [new-version]` to bypass Bundler and directly open the GitHub compare view for any two versions or branches, as shown in the command examples.

Question 5

How to set up a GitHub token for gemdiff to avoid rate limits?

Accepted Answer

Set the GEMDIFF_GITHUB_TOKEN or GITHUB_TOKEN environment variable to a personal access token from GitHub. This allows authenticated API requests with higher rate limits, as mentioned in the authenticated requests section.

Question 6

Can gemdiff work with private GitHub repositories?

Accepted Answer

Yes, if you have access and use an authenticated token with appropriate permissions. Set the token in the environment variable, and gemdiff should be able to access private repos via the GitHub API.

Question 7

How to skip interactive mode and open all compare views in gemdiff?

Accepted Answer

In interactive mode (`gemdiff each`), enter 'A' to open all compare views for outdated gems at once, but be cautious as it opens multiple browser tabs, as warned in the command description.

gemdiff

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