Fixed: ‘nxml-complete’ is an obsolete command (as of 26.1); use ‘completion-at-point’ instead.
--- a/.emacs-my Thu Jul 19 15:06:02 2018 +0300
+++ b/.emacs-my Wed Jul 25 21:52:30 2018 +0300
@@ -3509,7 +3509,9 @@
(add-to-list 'auto-mode-alist '("\.atom\\'" . nxml-mode))
(my--eval-after-load nxml-mode
- (define-key nxml-mode-map [C-return] 'nxml-complete))
+ (if (<= emacs-major-version 25)
+ (define-key nxml-mode-map [C-return] 'nxml-complete)
+ (define-key nxml-mode-map [C-return] 'completion-at-point))
(defun my-nxml-pp ()
"Pretty-print XML."