# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1615230003 -3600
# Node ID c424821dc03199bc9827c1388c48494824a87dde
# Parent  25305dfc4c92c686f5319efab3cbc1715e58e57e
patch 8.2.2578: Lua cannot handle a passed in lambda

Commit: https://github.com/vim/vim/commit/86c3a2162c2e78b4f0b87b47779cc1452990ee1b
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Mar 8 19:50:24 2021 +0100

    patch 8.2.2578: Lua cannot handle a passed in lambda

    Problem:    Lua cannot handle a passed in lambda.
    Solution:   Handle VAR_PARTIAL. (Prabir Shrestha, closes https://github.com/vim/vim/issues/7937, closes https://github.com/vim/vim/issues/7936)

diff --git a/src/if_lua.c b/src/if_lua.c
--- a/src/if_lua.c
+++ b/src/if_lua.c
@@ -568,6 +568,11 @@ luaV_pushtypval(lua_State *L, typval_T *
 	case VAR_FUNC:
 	    luaV_pushfuncref(L, tv->vval.v_string);
 	    break;
+	case VAR_PARTIAL:
+	    // TODO: handle partial arguments
+	    luaV_pushfuncref(L, partial_name(tv->vval.v_partial));
+	    break;
+
 	case VAR_BLOB:
 	    luaV_pushblob(L, tv->vval.v_blob);
 	    break;
diff --git a/src/testdir/test_lua.vim b/src/testdir/test_lua.vim
--- a/src/testdir/test_lua.vim
+++ b/src/testdir/test_lua.vim
@@ -121,6 +121,15 @@ func Test_lua_eval()
   lua v = nil
 endfunc
 
+" Test luaeval() with lambda
+func Test_luaeval_with_lambda()
+  lua function hello_luaeval_lambda(a, cb) return a .. cb() end
+  call assert_equal('helloworld',
+        \ luaeval('hello_luaeval_lambda(_A[1], _A[2])',
+        \         ['hello', {->'world'}]))
+  lua hello_luaeval_lambda = nil
+endfunc
+
 " Test vim.window()
 func Test_lua_window()
   e Xfoo2
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2578,
+/**/
     2577,
 /**/
     2576,