From e9be3522f2622b0bfc0f2e20dd284dc3bd3de584 Mon Sep 17 00:00:00 2001
From: hogelog <konbu.komuro@gmail.com>
Date: Sat, 27 Dec 2025 19:32:55 +0900
Subject: [PATCH 1/3] Support copy command on windows and wsl

---
 lib/irb/command/copy.rb | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/irb/command/copy.rb b/lib/irb/command/copy.rb
index 93410b878..ef2c33c66 100644
--- a/lib/irb/command/copy.rb
+++ b/lib/irb/command/copy.rb
@@ -39,8 +39,12 @@ def execute(arg)
       private
 
       def copy_to_clipboard(text)
-        IO.popen(clipboard_program, 'w') do |io|
-          io.write(text)
+        if Gem.win_platform?
+          Kernel.system("powershell.exe", "-NoProfile", "-Command", "Set-Clipboard", "-Value", text)
+        else
+          IO.popen(clipboard_program, 'w') do |io|
+            io.write(text)
+          end
         end
 
         raise IOError.new("Copying to clipboard failed") unless $? == 0
@@ -54,6 +58,8 @@ def copy_to_clipboard(text)
       def clipboard_program
         @clipboard_program ||= if IRB.conf[:COPY_COMMAND]
                                  IRB.conf[:COPY_COMMAND]
+                               elsif executable?("clip.exe")
+                                 "clip.exe"
                                elsif executable?("pbcopy")
                                  "pbcopy"
                                elsif executable?("xclip")
@@ -66,7 +72,7 @@ def executable?(command)
       end
 
       def clipboard_available?
-        !!clipboard_program
+        Gem.win_platform? || !!clipboard_program
       end
     end
   end

From d97375e96d70ee909609324767d23d001e06af1e Mon Sep 17 00:00:00 2001
From: hogelog <konbu.komuro@gmail.com>
Date: Tue, 30 Dec 2025 01:01:56 +0900
Subject: [PATCH 2/3] Don't use Gem.win_platform?

---
 lib/irb/command/copy.rb | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/irb/command/copy.rb b/lib/irb/command/copy.rb
index ef2c33c66..c02d45256 100644
--- a/lib/irb/command/copy.rb
+++ b/lib/irb/command/copy.rb
@@ -39,7 +39,7 @@ def execute(arg)
       private
 
       def copy_to_clipboard(text)
-        if Gem.win_platform?
+        if windows?
           Kernel.system("powershell.exe", "-NoProfile", "-Command", "Set-Clipboard", "-Value", text)
         else
           IO.popen(clipboard_program, 'w') do |io|
@@ -72,7 +72,11 @@ def executable?(command)
       end
 
       def clipboard_available?
-        Gem.win_platform? || !!clipboard_program
+        windows? || !!clipboard_program
+      end
+
+      def windows?
+        /mingw|mswin/.match?(RUBY_PLATFORM)
       end
     end
   end

From e90574a4e233e8bbd9e89bf9e1f05d555d81677c Mon Sep 17 00:00:00 2001
From: hogelog <konbu.komuro@gmail.com>
Date: Tue, 30 Dec 2025 01:03:35 +0900
Subject: [PATCH 3/3] Stop the workaround for windows environment

---
 lib/irb/command/copy.rb | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/irb/command/copy.rb b/lib/irb/command/copy.rb
index c02d45256..6b3bcc651 100644
--- a/lib/irb/command/copy.rb
+++ b/lib/irb/command/copy.rb
@@ -39,12 +39,8 @@ def execute(arg)
       private
 
       def copy_to_clipboard(text)
-        if windows?
-          Kernel.system("powershell.exe", "-NoProfile", "-Command", "Set-Clipboard", "-Value", text)
-        else
-          IO.popen(clipboard_program, 'w') do |io|
-            io.write(text)
-          end
+        IO.popen(clipboard_program, 'w') do |io|
+          io.write(text)
         end
 
         raise IOError.new("Copying to clipboard failed") unless $? == 0
@@ -68,7 +64,11 @@ def clipboard_program
       end
 
       def executable?(command)
-        system("which #{command} > /dev/null 2>&1")
+        if windows?
+          system("where #{command} > NUL 2>&1")
+        else
+          system("which #{command} > /dev/null 2>&1")
+        end
       end
 
       def clipboard_available?