https://git.ruby-lang.org/ruby.git/commit/?id=3169ffc0d6

From 3169ffc0d61ce357ff2e5728b234355fe1523b69 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Sat, 16 Feb 2019 14:48:51 +0100
Subject: [ruby/rdoc] Add frozen string literal support

https://github.com/ruby/rdoc/commit/daac9d0471

diff --git a/lib/rdoc/erb_partial.rb b/lib/rdoc/erb_partial.rb
index 8dc2c46..d6e3f41 100644
--- a/lib/rdoc/erb_partial.rb
+++ b/lib/rdoc/erb_partial.rb
@@ -12,7 +12,7 @@ class RDoc::ERBPartial < ERB https://github.com/ruby/ruby/blob/trunk/lib/rdoc/erb_partial.rb#L12
   def set_eoutvar compiler, eoutvar = '_erbout'
     super
 
-    compiler.pre_cmd = ["#{eoutvar} ||= ''"]
+    compiler.pre_cmd = ["#{eoutvar} ||= +''"]
   end
 
 end
-- 
cgit v0.10.2


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