https://git.ruby-lang.org/ruby.git/commit/?id=0d1f0cd9cc

From 0d1f0cd9ccb8c4d237f1eba92254a2ab306ae231 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sat, 30 May 2020 01:15:23 +0900
Subject: runnable.rb: ignore broken symlink error on Windows [ci skip]


diff --git a/tool/mkrunnable.rb b/tool/mkrunnable.rb
index 01756a3..cb211fd 100755
--- a/tool/mkrunnable.rb
+++ b/tool/mkrunnable.rb
@@ -45,6 +45,10 @@ end https://github.com/ruby/ruby/blob/trunk/tool/mkrunnable.rb#L45
 
 def ln_safe(src, dest)
   ln_sf(src, dest)
+rescue Errno::ENOENT
+  # Windows disallows to create broken symboic links, probably because
+  # it is a kind of reparse points.
+  raise if File.exist?(src)
 end
 
 alias ln_dir_safe ln_safe
@@ -64,8 +68,8 @@ def relative_path_from(path, base) https://github.com/ruby/ruby/blob/trunk/tool/mkrunnable.rb#L68
   base = clean_path(base)
   path, base = [path, base].map{|s|s.split("/")}
   until path.empty? or base.empty? or path[0] != base[0]
-      path.shift
-      base.shift
+    path.shift
+    base.shift
   end
   path, base = [path, base].map{|s|s.join("/")}
   if /(\A|\/)\.\.\// =~ base
-- 
cgit v0.10.2


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