GitLab

* doc/lispref/files.texi (Magic File Names): Add `file-local-name'.
(Unique File Names): Use it.

* etc/NEWS: Mention `file-local-name'.

* lisp/files.el (file-local-name): New defun.
(file-expand-wildcards):
* lisp/eshell/em-tramp.el (eshell/su, eshell/sudo):
* lisp/eshell/esh-ext.el (eshell-remote-command):
* lisp/eshell/esh-proc.el (eshell-gather-process-output):
* lisp/org/ob-core.el (org-babel-local-file-name):
* lisp/progmodes/gud.el (gud-common-init, gud-format-command):
* lisp/progmodes/python.el (python-shell-send-file):
* lisp/shell.el (shell):
* lisp/vc/ediff-diff.el (ediff-same-file-contents):
* lisp/vc/vc-git.el (vc-git-checkin): Use it.