setup: Warn the user if not in a git repo

When --global or --system is not used, the `setup` command should be ran
from a git repository, so the options can be stored in that particular
project's config. This commit improves the error message provided to the
user when this is not the case.

Fixes #100.

1 files changed, 9 insertions, 0 deletions

diff --git a/git-hub b/git-hub
index 7c460b5..0272a21 100755
--- a/git-hub
+++ b/git-hub
@@ -678,6 +678,15 @@ class SetupCmd (object):
 					scopes=['user', 'repo'])
 
 		set_config = lambda k, v: git_config(k, value=v, opts=args.opts)
+
+		try:
+			if '--system' not in args.opts and \
+					'--global' not in args.opts:
+				git('rev-parse --git-dir')
+		except GitError as error:
+			errf(error.output)
+			die("Maybe you want to use --global or --system?")
+
 		set_config('username', username)
 		set_config('oauthtoken', auth['token'])
 		if args.baseurl is not None: