https://git.ruby-lang.org/ruby.git/commit/?id=db844749af

From db844749af2da9cc06d90db0cb317ec379582afa Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 10 Jul 2019 01:21:05 +0900
Subject: Added StringIO::VERSION


diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 6ae9e80..4c135ef 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -11,6 +11,8 @@ https://github.com/ruby/ruby/blob/trunk/ext/stringio/stringio.c#L11
 
 **********************************************************************/
 
+#define STRINGIO_VERSION "0.0.2"
+
 #include "ruby.h"
 #include "ruby/io.h"
 #include "ruby/encoding.h"
@@ -1629,6 +1631,8 @@ Init_stringio(void) https://github.com/ruby/ruby/blob/trunk/ext/stringio/stringio.c#L1631
 #undef rb_intern
     VALUE StringIO = rb_define_class("StringIO", rb_cData);
 
+    rb_define_const(StringIO, "VERSION", rb_str_new_cstr(STRINGIO_VERSION));
+
     rb_include_module(StringIO, rb_mEnumerable);
     rb_define_alloc_func(StringIO, strio_s_allocate);
     rb_define_singleton_method(StringIO, "new", strio_s_new, -1);
diff --git a/ext/stringio/stringio.gemspec b/ext/stringio/stringio.gemspec
index df1d468..c0258ba 100644
--- a/ext/stringio/stringio.gemspec
+++ b/ext/stringio/stringio.gemspec
@@ -3,9 +3,18 @@ https://github.com/ruby/ruby/blob/trunk/ext/stringio/stringio.gemspec#L3
 # stub: stringio 0.0.0 ruby lib
 # stub: extconf.rb
 
+source_version = ["", "ext/stringio/"].find do |dir|
+  begin
+    File.open(File.join(__dir__, "#{dir}stringio.c")) {|f|
+      f.gets("\n#define STRINGIO_VERSION ")
+      f.gets[/\s*(".+")/, 1].undump
+    }
+  rescue Errno::ENOENT
+  end
+end
 Gem::Specification.new do |s|
   s.name = "stringio".freeze
-  s.version = "0.0.2"
+  s.version = source_version
 
   s.required_rubygems_version = Gem::Requirement.new(">= 2.6".freeze)
   s.require_paths = ["lib".freeze]
-- 
cgit v0.10.2


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