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-rw-r--r--lib/.document1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/.document b/lib/.document
index 3cb3c859e1..ea9dc9941a 100644
--- a/lib/.document
+++ b/lib/.document
@@ -25,6 +25,7 @@ matrix.rb
observer.rb
optionparser.rb
pathname.rb
+rational.rb
set.rb
shellwords.rb
singleton.rb