Add completion for short options

[Wiktorro]

Git provided completion for long options but not the short ones

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Signed-off-by: Wiktor Mis mwiktor023@gmail.com

[Wiktorro]

git version 2.51.2.windows.1 from https://github.com/git-for-windows/git
Modification tested, maintained earlier functionality, upon completion request with multiple TABs behaves as presented

[dscho]

@Wiktorro thank you for this contribution. It is, however, not specific to Windows, so I wonder whether you want to contribute it directly to the Git project instead?

In any case, this patch targets the core Git code and is therefore subject to Git's rules. Therefore, could you please use your real name in the Signed-off-by line and in your author information? The Git project insists on that. You can fix it by configuring user.name, then git commit --amend --reset-author --signoff (deleting the superseded Signed-off-by line), and force-pushing.

[Wiktorro]

@Wiktorro thank you for this contribution. It is, however, not specific to Windows, so I wonder whether you want to contribute it directly to the Git project instead?

In any case, this patch targets the core Git code and is therefore subject to Git's rules. Therefore, could you please use your real name in the Signed-off-by line and in your author information? The Git project insists on that. You can fix it by configuring user.name, then git commit --amend --reset-author --signoff (deleting the superseded Signed-off-by line), and force-pushing.

Oh yes, it's much better to handle it from git source first, so I will address this case there before I try progressing with this PR, Thanks.
About sign off infos, I will handle them in free moment as well - unfortunately I needed recently to migrate my work environment so I did commit via browser, copying my change from editor. Will take a moment to bring order to my setup...

Marking this as draft, just to avoid wasting attention, thanks.for immediate response!