patch 8.2.2983: Vim9: an inline function requires specifying the return type Commit: https://github.com/vim/vim/commit/a9931535387e5eb4e6ce62f2a661484de4a1757d Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 12 15:58:16 2021 +0200 patch 8.2.2983: Vim9: an inline function requires specifying the return type Problem: Vim9: an inline function requires specifying the return type. Solution: Make the return type optional.

--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -1377,7 +1377,7 @@ get_lambda_tv(
 		    goto errret;
 	    }
 	    else
-		fp->uf_ret_type = &t_any;
+		fp->uf_ret_type = &t_unknown;
 	}
 
 	fp->uf_lines = newlines;