[rubygems/rubygems] Let Version#spaceship accept a String

With this patch, handwriting version comparisons become a little bit easier.

before:
  SomeGem.version <=> Gem::Version.new('1.3')

after:
  SomeGem.version <=> '1.3'

https://github.com/rubygems/rubygems/commit/7e0dbb79f2

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/rubygems/version.rb b/lib/rubygems/version.rb
index 42e0f23505..9a26f721d6 100644
--- a/lib/rubygems/version.rb
+++ b/lib/rubygems/version.rb
@@ -341,9 +341,11 @@ class Gem::Version
   # Compares this version with +other+ returning -1, 0, or 1 if the
   # other version is larger, the same, or smaller than this
   # one. Attempts to compare to something that's not a
-  # <tt>Gem::Version</tt> return +nil+.
+  # <tt>Gem::Version</tt> or a valid version String return +nil+.
 
   def <=>(other)
+    return self <=> self.class.new(other) if (String === other) && self.class.correct?(other)
+
     return unless Gem::Version === other
     return 0 if @version == other._version || canonical_segments == other.canonical_segments