Dear Maintainer,

I'm running bash, and I'm in a git repo on branch suggestion-cleanup, and type

 $ git branch --set-upstream-to=o

and then hit <tab> to get completions for origin/...

After I hit tab, the prompt is

 $ git branch origin/

Which means that the tab completion removed the '--set-upstream-to=' from my
prompt.

I expected the prompt to be

 $ git branch --set-upstream-to=origin/

This is clearly unintuitive, and hinders work with git more than it
helps.

I've verified that this is not just a display problem; the option is actually
gone.


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