Christian Brabandt d85465cb7e don't error out early, if git not exists ...

Even if git is not available, one can still use plug.vim
for managing the runtime path.
This allows, to share the same config with several vim instances, some
of which, might not have vim installed (or not have it in $PATH). The
commands `:Plug` and `:PlugClean` seem to be safe even in this case.

Unfortunately in that case, plug.vim errors out on every start.

So let's just move the check for the existance of git to the place,
where it is actually needed.

In theory, we can also just move the check `:if excutable('git')` around
the definition of the all commands that need git, so they would be only
defined on systems that have git installed. But I actually like the way,
how the commands will always be defined, but they error out once one
tries to execute them.

2016-01-27 23:33:10 +01:00

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