From 44032802117ba261bf128cb9332e073f6e40fdc9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9CVidisha?= <“vidishanevatia@gmail.com”>
Date: Mon, 16 Dec 2024 22:20:29 -0800
Subject: [PATCH] cmd/list: fix duplicate casks when symlinks exist

When a cask is renamed (e.g. logi-options-plus to logi-options+),
Homebrew creates a symlink in the Caskroom directory. Currently,
`brew list --cask` shows both the original and symlinked cask as
separate entries. This patch modifies the listing logic to resolve
symlinks and show only unique casks.

Fixes #18849
---
 Library/Homebrew/cmd/list.rb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/cmd/list.rb b/Library/Homebrew/cmd/list.rb
index 78e3e8e2b8..080dc25585 100644
--- a/Library/Homebrew/cmd/list.rb
+++ b/Library/Homebrew/cmd/list.rb
@@ -214,7 +214,15 @@ module Homebrew
       sig { void }
       def list_casks
         casks = if args.no_named?
-          Cask::Caskroom.casks
+          cask_paths = Cask::Caskroom.path.children.map do |path|
+            if path.symlink?
+              real_path = path.realpath
+              real_path.basename.to_s
+            else
+              path.basename.to_s
+            end
+          end.uniq
+          cask_paths.map { |name| Cask::CaskLoader.load(name) }
         else
           filtered_args = args.named.dup.delete_if do |n|
             Homebrew.failed = true unless Cask::Caskroom.path.join(n).exist?