From 92a08cece72aeb67cf2a527991cbffdab093db5e Mon Sep 17 00:00:00 2001
From: Folke Lemaitre <folke.lemaitre@gmail.com>
Date: Tue, 21 Oct 2025 23:39:36 +0200
Subject: [PATCH] fix(image): work-around for sha256 not allowed to be a Blob

---
 lua/snacks/image/doc.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lua/snacks/image/doc.lua b/lua/snacks/image/doc.lua
index 59a34baf..9eac511a 100644
--- a/lua/snacks/image/doc.lua
+++ b/lua/snacks/image/doc.lua
@@ -23,6 +23,7 @@ local M = {}
 ---@field pos snacks.image.Pos
 ---@field src? string
 ---@field content? string
+---@field content_id? string
 ---@field ext? string
 ---@field range? Range4
 ---@field lang string
@@ -63,6 +64,7 @@ M.transforms = {
       return
     end
     img.content = vim.base64.decode(data)
+    img.content_id = data:sub(1, 20)
     img.src = nil
     img.ext = ft:match("^image/(%w+)$") or "png"
   end,
@@ -319,7 +321,11 @@ function M._img(ctx)
   if img.content and not img.src then
     local root = Snacks.image.config.cache
     vim.fn.mkdir(root, "p")
-    img.src = root .. "/" .. vim.fn.sha256(img.content):sub(1, 8) .. "-content." .. (img.ext or "png")
+    img.src = root
+      .. "/"
+      .. (img.content_id or vim.fn.sha256(img.content):sub(1, 8))
+      .. "-content."
+      .. (img.ext or "png")
     if vim.fn.filereadable(img.src) == 0 then
       local fd = assert(io.open(img.src, "w"), "failed to open " .. img.src)
       fd:write(img.content)