parsedate is no more available since 1.9

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53360 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/sample/tkbiff.rb

@@ -19,11 +19,8 @@ else
   $spool = ARGV[0]
 end
 
-require "parsedate"
 require "base64"
 
-include ParseDate
-
 class Mail
   def Mail.new(f)
     if !f.kind_of?(IO)
@@ -128,7 +125,10 @@ def pop_up
     date, from, subj =  mail.header['Date'], mail.header['From'], mail.header['Subject']
     next if !date
     y = m = d = 0
-    y, m, d = parsedate(date) if date
+    if date
+      date = Date.parse(date)
+      y, m, d = date.year, date.month, date.mday
+    end
     from = "sombody@somewhere" if ! from
     subj = "(nil)" if ! subj
     from = decode_b(from)

ext/tk/sample/tkfrom.rb

@@ -1,11 +1,8 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: false
 
-require "parsedate"
 require "base64"
 
-include ParseDate
-
 class Mail
   def Mail.new(f)
     if !f.kind_of?(IO)
@@ -107,7 +104,10 @@ for file in ARGV
       from = mail.header['From']
       subj = mail.header['Subject']
       y = m = d = 0
-      y, m, d = parsedate(date) if date
+      if date
+        date = Date.parse(date) if date
+        y, m, d = date.year, date.mon, date.mday
+      end
       from = "sombody@somewhere" unless from
       subj = "(nil)" unless subj
       from = decode_b(from)