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-rw-r--r--actionpack/lib/action_dispatch/routing/mapper.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index f57d88d1a5..522012063d 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -187,7 +187,7 @@ module ActionDispatch
# Get all the symbol nodes followed by literals that are not the
# dummy node.
symbols = ast.find_all { |n|
- n.cat? && n.left.symbol? && n.right.cat?
+ n.cat? && n.left.symbol? && n.right.cat? && n.right.left.literal?
}.map(&:left)
# Get all the symbol nodes preceded by literals.