Fix inconsistency expanding "//" in Tramp

* doc/misc/tramp.texi (File name completion): Adapt example
expanding "//".

* lisp/net/tramp.el (tramp-handle-substitute-in-file-name): "//" shall
expand the localname only, even when on top of the local part.

* test/lisp/net/tramp-tests.el (tramp-test04-substitute-in-file-name):
Adapt test.

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/misc/tramp.texi b/doc/misc/tramp.texi
index 235627cc0f9..ae544b08712 100644
--- a/doc/misc/tramp.texi
+++ b/doc/misc/tramp.texi
@@ -2509,7 +2509,7 @@ Example:
      @print{} @trampfn{ssh,melancholia,/etc}
 
 @kbd{C-x C-f @trampfn{ssh,melancholia,//etc} @key{TAB}}
-     @print{} /etc
+     @print{} @trampfn{ssh,melancholia,/etc}
 
 @kbd{C-x C-f @trampfn{ssh,melancholia,/usr/local/bin///etc} @key{TAB}}
      @print{} /etc