Handle also port and domain in Tramp proxy definitions

* doc/misc/tramp.texi (Multi-hops): Exclude ports and domains from
pattern expansion.

* lisp/net/tramp-cmds.el (tramp-cleanup-all-connections):
Remove ad-hoc proxies.

* lisp/net/tramp-sh.el (tramp-compute-multi-hops): Handle also
port and domain in the proxy.  Propertize ad-hoc proxies.

* lisp/net/tramp.el (tramp-default-proxies-alist): Adapt docstring.

* test/lisp/net/tramp-tests.el (tramp-test02-file-name-dissect)
(tramp-test02-file-name-dissect-simplified)
(tramp-test02-file-name-dissect-separate): Extend tests.

1 files changed, 2 insertions, 1 deletions

diff --git a/doc/misc/tramp.texi b/doc/misc/tramp.texi
index f68205519f3..a0b65d58b55 100644
--- a/doc/misc/tramp.texi
+++ b/doc/misc/tramp.texi
@@ -1374,7 +1374,8 @@ connect to @samp{bastion.your.domain}, then:
 @end lisp
 
 @var{proxy} can take patterns @code{%h} or @code{%u} for @var{host} or
-@var{user} respectively.
+@var{user} respectively.  Ports or domains, if they are part of
+a hop file name, are not expanded by those patterns.
 
 To login as @samp{root} on remote hosts in the domain
 @samp{your.domain}, but login as @samp{root} is disabled for non-local