Fonte: Configurar o verificador ortográfico do Git Gui no Windows
Follow these step to configure interactive spell checker for msysGit GIT GUI:
- Download and install Aspell. Also download and install any dictionaries you may need.
- Add the Aspell binaries folder (a folder where the installer places aspell.exe) to the PATH environment variable. For more information on how to do this have a look at How to set the path and environment variables in Windows.
- If you had GIT GUI open, re-start it and open options (Edit -> Options…).
- Pick a dictionary to use from “Spelling Dictionary” drop down list (this time it should have more choices available).