[rubygems/rubygems] Improve errors a bit more

https://github.com/rubygems/rubygems/commit/f481e8f41a

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/bundler/resolver.rb b/lib/bundler/resolver.rb
index 37c27f213d..22d61fba36 100644
--- a/lib/bundler/resolver.rb
+++ b/lib/bundler/resolver.rb
@@ -287,7 +287,12 @@ module Bundler
       end
 
       message = String.new("Could not find gem '#{requirement_label}'#{extra_message} in #{source}#{cache_message}.\n")
-      message << "The source contains the following gems matching '#{matching_part}': #{specs.map(&:full_name).join(", ")}" if specs.any?
+
+      if specs.any?
+        message << "\nThe source contains the following gems matching '#{matching_part}':\n"
+        message << specs.map {|s| "  * #{s.full_name}" }.join("\n")
+      end
+
       message
     end