New session - 2026-02-13T09:54:36.506Z

The user wants me to translate a shell script into fish shell code. Let me analyze the shell script: ```bash #!/bin/sh set -u branch="$1" git check-ref-format --branch "$branch" >/dev/null || exit 1 git worktree list --porcelain \ | grep "^branch refs/heads/$branch" >/dev/null \ || exit 1 git worktree list --porcelain \ | grep -B2 "^branch refs/heads/$branchName" \ | head -1 | cut -d' ' -f 2 ``` Wait, there's an error in the original script - it uses `$branchName` in the last grep but the variable is defined as `branch` not `branchName`. I'll assume this should be `$branch`. Let me translate this to fish: 1. `#!/bin/sh` - shebang changes to `#!/usr/bin/env fish` 2. `set -u` - fish doesn't have this exact equivalent, but we can use `set -l` for local variables 3. `branch="$1"` - fish uses `set branch $argv[1]` 4. `git check-ref-format --branch "$branch" >/dev/null || exit 1` - similar syntax in fish 5. The grep chains work similarly in fish Here's the fish translation: ```fish #!/usr/bin/env fish set branch $argv[1] git check-ref-format --branch $branch >/dev/null; or exit 1 git worktree list --porcelain \ | grep "^branch refs/heads/$branch" >/dev/null \ ; or exit 1 git worktree list --porcelain \ | grep -B2 "^branch refs/heads/$branch" \ | head -1 | cut -d' ' -f 2 ``` Wait, I need to be careful with variable interpolation. In fish, `$branch` will expand, but I should be careful about spaces. Let me refine: ```fish #!/usr/bin/env fish set branch $argv[1] git check-ref-format --branch $branch >/dev/null; or exit 1 git worktree list --porcelain | grep "^branch refs/heads/$branch" >/dev/null; or exit 1 git worktree list --porcelain | grep -B2 "^branch refs/heads/$branch" | head -1 | cut -d' ' -f 2 ``` I'll simplify the script by removing unnecessary backslashes and using fish-specific syntax for error handling. The key changes include using `$argv[1]` for argument parsing and `; or` for exit on failure. The script now provides a clean, concise way to