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-rw-r--r--lib/irb/init.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/irb/init.rb b/lib/irb/init.rb
index 11f3932be2..ebae37146f 100644
--- a/lib/irb/init.rb
+++ b/lib/irb/init.rb
@@ -161,7 +161,7 @@ module IRB # :nodoc:
end
when "--noinspect"
@CONF[:INSPECT_MODE] = false
- when "--singleline", "--readline"
+ when "--singleline", "--readline", "--legacy"
@CONF[:USE_SINGLELINE] = true
when "--nosingleline", "--noreadline"
@CONF[:USE_SINGLELINE] = false