From 5acab3d8a9bc85a571688db432f2702dd7d901a4 Mon Sep 17 00:00:00 2001
From: Steven Arcangeli <stevearc@stevearc.com>
Date: Thu, 21 Nov 2024 17:36:22 -0800
Subject: [PATCH] fix: image.nvim previews with preview_method=scratch

---
 lua/oil/init.lua |  6 +++++-
 lua/oil/util.lua | 22 ++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/lua/oil/init.lua b/lua/oil/init.lua
index 7645f35..bbd290d 100644
--- a/lua/oil/init.lua
+++ b/lua/oil/init.lua
@@ -534,7 +534,11 @@ M.open_preview = function(opts, callback)
 
     local entry_is_file = not vim.endswith(normalized_url, "/")
     local filebufnr
-    if entry_is_file and config.preview_win.preview_method ~= "load" then
+    if
+      entry_is_file
+      and config.preview_win.preview_method ~= "load"
+      and not util.file_matches_bufreadcmd(normalized_url)
+    then
       filebufnr =
         util.read_file_to_scratch_buffer(normalized_url, config.preview_win.preview_method)
     end
diff --git a/lua/oil/util.lua b/lua/oil/util.lua
index 24b714b..441421b 100644
--- a/lua/oil/util.lua
+++ b/lua/oil/util.lua
@@ -952,4 +952,26 @@ M.read_file_to_scratch_buffer = function(path, preview_method)
   return bufnr
 end
 
+local _regcache = {}
+---Check if a file matches a BufReadCmd autocmd
+---@param filename string
+---@return boolean
+M.file_matches_bufreadcmd = function(filename)
+  local autocmds = vim.api.nvim_get_autocmds({
+    event = "BufReadCmd",
+  })
+  for _, au in ipairs(autocmds) do
+    local pat = _regcache[au.pattern]
+    if not pat then
+      pat = vim.fn.glob2regpat(au.pattern)
+      _regcache[au.pattern] = pat
+    end
+
+    if vim.fn.match(filename, pat) >= 0 then
+      return true
+    end
+  end
+  return false
+end
+
 return M