Fixed a logic glitch in IO#block_scanf

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5901 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/scanf.rb b/lib/scanf.rb
index aeff61c115..c4da747afe 100644
--- a/lib/scanf.rb
+++ b/lib/scanf.rb
@@ -656,10 +656,11 @@ class IO
 # Sub-ideal, since another FS gets created in scanf.
 # But used here to determine the number of specifiers.
     fstr = Scanf::FormatString.new(str)
+    last_spec = fstr.last_spec
     begin
       current = scanf(str)
       final.push(yield(current)) unless current.empty?
-    end until eof || current.size < fstr.spec_count
+    end until eof || fstr.last_spec_tried == last_spec
     return final
   end
 end