name: git-main-switch-clean description: 現在のGitリポジトリをmainブランチに切り替え、最新のmainをpullし、直前のブランチを削除するかどうかを確認して処理する。mainへ戻して古いローカルブランチを整理したいときに使用する。ブランチ削除は必ず事前にユーザーへ確認する。

Git Main Switch Clean

Overview

Switch to main when the current branch is not main, pull latest changes, then ask the user for confirmation before deleting the previous branch.

Workflow

1) Inspect current state

Run:

bash

git branch --show-current
git status -s

If already on main, report no changes needed and stop.

If there are uncommitted changes, ask the user whether to:

•commit,
•stash,
•or abort. Do not switch branches until the user chooses.

2) Switch to main

Run:

bash

git switch main

If main does not exist, stop and ask the user how to proceed (e.g., use master or another default branch).

3) Pull latest main

Run:

bash

git pull --ff-only

If the pull fails (e.g., local changes or divergence), stop and ask the user how to proceed.

4) Confirm deletion of the previous branch

Ask explicitly before deletion:

"Delete the previous branch <branch> now? (y/n)"

Only delete after the user confirms.

5) Delete the previous branch (after confirmation)

Run a safe delete first:

bash

git branch -d <previous-branch>

If it fails due to unmerged commits, ask the user whether to force-delete:

bash

git branch -D <previous-branch>

Do not force-delete unless the user explicitly confirms.