patch 8.1.1588: in :let-heredoc line continuation is recognized commit https://github.com/vim/vim/commit/e96a2498f9a2d3e93ac07431f6d4afd77f30afdf Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jun 25 04:12:16 2019 +0200 patch 8.1.1588: in :let-heredoc line continuation is recognized Problem: In :let-heredoc line continuation is recognized. Solution: Do not consume line continuation. (Ozaki Kiichi, closes https://github.com/vim/vim/issues/4580)

--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -3234,7 +3234,8 @@ execute_redir_str(char_u *value, int val
 get_list_line(
     int	    c UNUSED,
     void    *cookie,
-    int	    indent UNUSED)
+    int	    indent UNUSED,
+    int	    do_concat UNUSED)
 {
     listitem_T **p = (listitem_T **)cookie;
     listitem_T *item = *p;