From fb6aeaba2d3a38c7febd0a39cabd89685de11b9d Mon Sep 17 00:00:00 2001
From: Barrett Ruth <62671086+barrettruth@users.noreply.github.com>
Date: Wed, 22 Apr 2026 13:36:43 -0400
Subject: feat(eval): treat Lua string as "blob" in writefile() #39098

Problem:
vim.fn.writefile() treats Lua strings as Vimscript strings instead of a "binary clean" string.

Solution:
Treat Lua-originated strings as blob data.
---
 src/nvim/lua/executor.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/nvim/lua/executor.c')

diff --git a/src/nvim/lua/executor.c b/src/nvim/lua/executor.c
index 1771a01565..02a95d5f6d 100644
--- a/src/nvim/lua/executor.c
+++ b/src/nvim/lua/executor.c
@@ -1366,12 +1366,14 @@ int nlua_call(lua_State *lstate)
   funcexe.fe_firstline = curwin->w_cursor.lnum;
   funcexe.fe_lastline = curwin->w_cursor.lnum;
   funcexe.fe_evaluate = true;
+  const sctx_T save_current_sctx = api_set_sctx(LUA_INTERNAL_CALL);
 
   TRY_WRAP(&err, {
     // call_func() retval is deceptive, ignore it.  Instead we set `msg_list`
     // (TRY_WRAP) to capture abort-causing non-exception errors.
     (void)call_func(name, (int)name_len, &rettv, nargs, vim_args, &funcexe);
   });
+  current_sctx = save_current_sctx;
 
   if (!ERROR_SET(&err)) {
     nlua_push_typval(lstate, &rettv, 0);
-- 
cgit