https://git.ruby-lang.org/ruby.git/commit/?id=75d9fa8b07

From 75d9fa8b079c27c66ac1eabfae366df465244fc4 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 13 Aug 2019 12:24:55 +0900
Subject: Detect VCS from the current directory by default [ci skip]


diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index 0a3d54c..9a90a04 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -127,7 +127,7 @@ class VCS https://github.com/ruby/ruby/blob/trunk/tool/lib/vcs.rb#L127
     @@dirs << [dir, self, pred]
   end
 
-  def self.detect(path, options = {}, argv = ::ARGV)
+  def self.detect(path = '.', options = {}, argv = ::ARGV)
     uplevel_limit = options.fetch(:uplevel_limit, 0)
     curr = path
     begin
-- 
cgit v0.10.2


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