Create gitignore when using g option

[jaesung9507]

No description provided.

[leaanthony]

Thanks for opening this. Ioutil is deprecated but there's an equivalent method in the Io package. Otherwise LGTM

[stffabi]

Please also make sure to use filepath.Join to join the path, otherwise it might fail on Windows.

[leaanthony]

@stffabi I may be reading it wrong but it looks like forward slash is the format used for all platforms? https://git-scm.com/docs/gitignore

This seems to be backed up by the Microsoft documentation at https://docs.microsoft.com/en-us/azure/devops/repos/git/ignore-files?view=azure-devops&viewFallbackFrom=vsts&tabs=visual-studio-2019#use-gitignore-to-prevent-tracking-of-files

Windows users must use a forward slash path separator in a .gitignore file instead of a backslash. All users must add a trailing / when specifying a folder.

[stffabi]

Yeah, the comment was about the os.WriteFile argument and not for the content in .gitignore.
Sorry I wasn't clear enough about that in my comment. 😔

[stffabi]

@jaesung9507 Sorry for not being clear enough in my comment and for wasting your time with those filepath.Join in the .gitignore content.

[leaanthony]

Ah all good 😃 I should have thought of that 😉

[jaesung9507]

@leaanthony @stffabi

Thank you for your kind code review.

[stffabi]

LGTM, thanks for this PR 👍