patch 8.2.0626: Vim9: wrong syntax of function in Vim9 script Commit: https://github.com/vim/vim/commit/f93c7fea084a99848d512ff2732041d4b41d93c8 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 23 22:16:53 2020 +0200 patch 8.2.0626: Vim9: wrong syntax of function in Vim9 script Problem: Vim9: wrong syntax of function in Vim9 script. Solution: Give error for missing space. Implement :echomsg and :echoerr. (closes #5670)

--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -128,7 +128,13 @@ one_function_arg(char_u *arg, garray_T *
 	}
 	if (*p == ':')
 	{
-	    type = skipwhite(p + 1);
+	    ++p;
+	    if (!VIM_ISWHITE(*p))
+	    {
+		semsg(_(e_white_after), ":");
+		return arg;
+	    }
+	    type = skipwhite(p);
 	    p = skip_type(type);
 	    type = vim_strnsave(type, p - type);
 	}