[rubygems/rubygems] Introduce default prerelease requirement

https://github.com/rubygems/rubygems/commit/506c5bce49

1 files changed, 12 insertions, 1 deletions

diff --git a/lib/rubygems/requirement.rb b/lib/rubygems/requirement.rb
index b72921e72c..1e17fc2dc2 100644
--- a/lib/rubygems/requirement.rb
+++ b/lib/rubygems/requirement.rb
@@ -32,11 +32,16 @@ class Gem::Requirement
   PATTERN = /\A#{PATTERN_RAW}\z/.freeze
 
   ##
-  # The default requirement matches any version
+  # The default requirement matches any non-prerelease version
 
   DefaultRequirement = [">=", Gem::Version.new(0)].freeze
 
   ##
+  # The default requirement matches any version
+
+  DefaultPrereleaseRequirement = [">=", Gem::Version.new("0.a")].freeze
+
+  ##
   # Raised when a bad requirement is encountered
 
   class BadRequirementError < ArgumentError; end
@@ -73,6 +78,10 @@ class Gem::Requirement
     new '>= 0'
   end
 
+  def self.default_prerelease
+    new '>= 0.a'
+  end
+
   ###
   # A source set requirement, used for Gemfiles and lockfiles
 
@@ -101,6 +110,8 @@ class Gem::Requirement
 
     if $1 == ">=" && $2 == "0"
       DefaultRequirement
+    elsif $1 == ">=" && $2 == "0.a"
+      DefaultPrereleaseRequirement
     else
       [$1 || "=", Gem::Version.new($2)]
     end