爲git關聯編輯器（好比notepad++） Associating text editors with Git

Associating text editors with git

Using Notepad++ as your editors

you can set your default editor in Git to use Notepad++ if you have installed the editor.

一、install notepad++
二、open git bash
三、Type this command:

git config --global core.editor "'C:/Program Files (x86)/Notepad++/notepad++.exe' -multiInst -notabbar -nosession -noPlugin"

when you commit, type "git commit",then you can edit your message by notepad++

reference : https://help.github.com/en/articles/associating-text-editors-with-git