add dummy IO#flush for better compatibility with CRuby.

daa65c15 · Tomoyuki Sahara · 40c52f58 · daa65c15
Commit daa65c15 authored Feb 12, 2014 by Tomoyuki Sahara
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mrblib/io.rb mrblib/io.rb +5 -0

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--- a/mrblib/io.rb
+++ b/mrblib/io.rb
@@ -41,6 +41,11 @@ class IO
    end
  end

+  def flush
+    # mruby-io always writes immediately (no output buffer).
+    self
+  end
+
  def write(string)
    str = string.is_a?(String) ? string : string.to_s
    return str.size unless str.size > 0