Rebase

Rebase the current branch.

Arguments

• No arguments: rebase on local main
• origin: fetch origin, rebase on origin/main
• origin/branch: fetch origin, rebase on origin/branch
• branch: rebase on local branch

Steps

1. Parse arguments
   • No args → target is "main", no fetch
   • Contains "/" (e.g., "origin/develop") → split into remote and branch, fetch remote, target is remote/branch
   • Just "origin" → fetch origin, target is "origin/main"
   • Anything else → target is that branch name, no fetch