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-rwxr-xr-xdoc/language/mrbdoc/mrbdoc.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/language/mrbdoc/mrbdoc.rb b/doc/language/mrbdoc/mrbdoc.rb
index 5a8e4641a..cafdf112a 100755
--- a/doc/language/mrbdoc/mrbdoc.rb
+++ b/doc/language/mrbdoc/mrbdoc.rb
@@ -8,6 +8,7 @@ require 'mrbdoc_docu'
MRUBY_ROOT = ARGV[0]
DOC_ROOT = ARGV[1]
_WRITE_LINE_NO = ARGV[2]
+STDOUT.sync = true
raise ArgumentError.new 'mruby root missing!' if MRUBY_ROOT.nil?
raise ArgumentError.new 'doc root missing!' if DOC_ROOT.nil?