[rubygems/rubygems] Centralize logic using `Pathname#relative_path_from`

To avoid potential crashes when trying to jump from a drive to another
on Windows, and take the change refactor things a bit.

https://github.com/rubygems/rubygems/commit/7c9a9a431a

1 files changed, 1 insertions, 8 deletions

diff --git a/lib/bundler/installer/standalone.rb b/lib/bundler/installer/standalone.rb
index 2145e846f7..fed3d8c410 100644
--- a/lib/bundler/installer/standalone.rb
+++ b/lib/bundler/installer/standalone.rb
@@ -55,20 +55,13 @@ module Bundler
       if spec.source.instance_of?(Source::Path) && spec.source.path.absolute?
         full_path
       else
-        relative_path_from(Bundler.root.join(bundler_path), :to => full_path) || full_path
+        SharedHelpers.relative_path_to(full_path, :from => Bundler.root.join(bundler_path))
       end
     rescue TypeError
       error_message = "#{spec.name} #{spec.version} has an invalid gemspec"
       raise Gem::InvalidSpecificationException.new(error_message)
     end
 
-    def relative_path_from(source, to:)
-      Pathname.new(to).relative_path_from(source).to_s
-    rescue ArgumentError
-      # on Windows, if source and destination are on different drivers, there's no relative path from one to the other
-      nil
-    end
-
     def define_path_helpers
       <<~'END'
         unless defined?(Gem)