bug#44294: No widen by xref-find-definitions

[Dmitry Gutov]

On 28.10.2020 22:01, Juri Linkov wrote:
> -         (user-error "Rerun etags: `%s' not found in %s"
> -                      pat buffer-file-name)))
> +         (if (or (= (point-min) 1) (not widen-automatically))
> +              (user-error "Rerun etags: `%s' not found in %s"
> +                          pat buffer-file-name)
> +            ;; Rerun after removing narrowing
> +            (widen)
> +            (etags-goto-tag-location tag-info))))

By the way... have you tried to use the same method here as in 
elisp-mode? Meaning, widen unconditionally inside 'save-restriction'.

There should be no reason for backends to do it differently. And this 
way, you don't have to always search twice for a missing tag when inside 
a narrowing.