# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1597424405 -7200
# Node ID 51d4e0bc2eb73a6dbd1c46bcd9dc2c23c86eef82
# Parent  0e270151a2860183d76de9c45541b4f93bfc27ee
patch 8.2.1447: Vim9: return type of keys() is list<any>

Commit: https://github.com/vim/vim/commit/32f335f75c5860baa452144f63ab7a4a3dd83134
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri Aug 14 18:56:45 2020 +0200

    patch 8.2.1447: Vim9: return type of keys() is list<any>

    Problem:    Vim9: return type of keys() is list<any>.
    Solution:   Should be list<string>. (closes https://github.com/vim/vim/issues/6711)

diff --git a/src/evalfunc.c b/src/evalfunc.c
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -715,7 +715,7 @@ static funcentry_T global_functions[] =
     {"js_encode",	1, 1, FEARG_1,	  ret_string,	f_js_encode},
     {"json_decode",	1, 1, FEARG_1,	  ret_any,	f_json_decode},
     {"json_encode",	1, 1, FEARG_1,	  ret_string,	f_json_encode},
-    {"keys",		1, 1, FEARG_1,	  ret_list_any,	f_keys},
+    {"keys",		1, 1, FEARG_1,	  ret_list_string, f_keys},
     {"last_buffer_nr",	0, 0, 0,	  ret_number,	f_last_buffer_nr}, // obsolete
     {"len",		1, 1, FEARG_1,	  ret_number,	f_len},
     {"libcall",		3, 3, FEARG_3,	  ret_string,	f_libcall},
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -1283,6 +1283,11 @@ def Test_insert_return_type()
   assert_equal(6, res)
 enddef
 
+def Test_keys_return_type()
+  const var: list<string> = #{a: 1, b: 2}->keys()
+  assert_equal(['a', 'b'], var)
+enddef
+
 def Test_reverse_return_type()
   let l = reverse([1, 2, 3])
   let res = 0
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1447,
+/**/
     1446,
 /**/
     1445,