https://git.ruby-lang.org/ruby.git/commit/?id=3dd9e12b51

From 3dd9e12b515dea2c8a14b33c762807bb54625aef Mon Sep 17 00:00:00 2001
From: Ashwin Maroli <ashmaroli@u...>
Date: Thu, 10 Sep 2020 23:28:35 +0530
Subject: [ruby/fileutils] Reduce iteration through list for `:mkdir_p`

By calling the instruction to `list.map` within `list.each` itself.
https://github.com/ruby/fileutils/commit/e690eec937

diff --git a/lib/fileutils.rb b/lib/fileutils.rb
index c8f4b49..179d764 100644
--- a/lib/fileutils.rb
+++ b/lib/fileutils.rb
@@ -208,7 +208,9 @@ module FileUtils https://github.com/ruby/ruby/blob/trunk/lib/fileutils.rb#L208
     fu_output_message "mkdir -p #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
     return *list if noop
 
-    list.map {|path| remove_trailing_slash(path)}.each do |path|
+    list.each do |item|
+      path = remove_trailing_slash(item)
+
       # optimize for the most common case
       begin
         fu_mkdir path, mode
-- 
cgit v0.10.2


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