Git tag abbrev option

[kmoschcau]

Hi,
recently my most recent git tag output started to include the entire output of git describe with commit distance and current commit hash. I am not sure if this was caused by the update in powerline-gitstatus or a change in git itself.

In any case, I would like to change it, so it only shows the tag name. I would like to make this configurable, because not everyone might want to see it like I do.
I would like to create a pull request for this, but I can't decide on how to expose this functionality in the powerline config. There are several ways I could think of:

• simply create another option
  • pros:
    • backwards compatible
    • easy to implement
  • cons:
    • it is decoupled from the other option and might be confusing, when it does not do anything on it's own
• add an optional suffix to the option values
  • pros:
    • backwards compatible
  • cons:
    • it's a hack
    • it is not really that clear to the user
• replace the option with with another, that gets a JSON object with two values
  • pros:
    • the most clear to the user
  • cons:
    • not really backwards compatible, unless we add extra code to handle it

Independent from the way to add the option, I was also pondering whether one would just simply expose the --abbrev option argument to the user as a number, or to just expose a boolean, to pass the flag with 0 or not.

I would be happy for some advice and input, thank you in advance.