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-rw-r--r--actionpack/lib/action_view/helpers/asset_tag_helper.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helper.rb b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
index 1f48ab224d..d31b42b565 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
@@ -158,6 +158,7 @@ module ActionView
private
def compute_public_path(source, dir, ext)
+ source = source.dup
source = "/#{dir}/#{source}" unless source.first == "/" || source.include?(":")
source << ".#{ext}" unless source.split("/").last.include?(".")
source << '?' + rails_asset_id(source) if defined?(RAILS_ROOT) && %r{^[-a-z]+://} !~ source