Rework connection local variables

For connection local variables interface, `class' is renamed
to `profile'.  All arguments `criteria' are a plist now.

* doc/lispref/variables.texi (Connection Local Variables):
Rewrite.

* lisp/files-x.el (connection-local-profile-alist): Rename
from `connection-local-class-alist'.  Adapt docstring.
(connection-local-criteria-alist): Adapt docstring.
(connection-local-normalize-criteria): New defun.
(connection-local-get-profiles): Rename from
`connection-local-get-classes'.  Rewrite.
(connection-local-set-profiles): Rename from
`connection-local-set-classes'.  Rewrite.
(connection-local-get-profile-variables): Rename from
`connection-local-get-class-variables'.  Rewrite.
(connection-local-set-profile-variables): Rename from
`connection-local-set-class-variables'.  Rewrite.
(hack-connection-local-variables)
(hack-connection-local-variables-apply)): Rewrite.
(with-connection-local-profiles): Rename from
`ith-connection-local-classes'.  Rewrite.

* lisp/net/tramp.el (tramp-set-connection-local-variables):
Compute criteria.

* lisp/net/tramp-cmds.el (tramp-bug):
Use `connection-local-profile-alist'.

* test/lisp/files-x-tests.el (files-x-test--variables1)
(files-x-test--variables2, files-x-test--variables3)
(files-x-test--variables4, files-x-test--criteria1)
(files-x-test--criteria2): Make them a defconst.
(files-x-test--application)
(files-x-test--another-application, files-x-test--protocol)
(files-x-test--user, files-x-test--machine): New defconst.
(files-x-test--criteria): New defvar.
(files-x-test--criteria3): Remove.
(files-x-test-connection-local-set-profile-variables):
Rename from `files-x-test-connection-local-set-class-variables'.
Rewrite.
(files-x-test-connection-local-set-profiles): Rename from
`files-x-test-connection-local-set-classes'.  Rewrite.
(files-x-test-hack-connection-local-variables-apply)  Rewrite.
(files-x-test-with-connection-local-profiles): Rename from
`files-x-test-with-connection-local-classes'.  Rewrite.

1 files changed, 125 insertions, 89 deletions

diff --git a/test/lisp/files-x-tests.el b/test/lisp/files-x-tests.el
index 88b58fe9576..21d0087ebcf 100644
--- a/test/lisp/files-x-tests.el
+++ b/test/lisp/files-x-tests.el
@@ -24,130 +24,167 @@
 (require 'ert)
 (require 'files-x)
 
-(defvar files-x-test--criteria1 "my-user@my-remote-host")
-(defvar files-x-test--criteria2
-  (lambda (identification)
-    (string-match "another-user@my-remote-host" identification)))
-(defvar files-x-test--criteria3 nil)
-
-(defvar files-x-test--variables1
+(defconst files-x-test--variables1
   '((remote-shell-file-name . "/bin/bash")
     (remote-shell-command-switch . "-c")
     (remote-shell-interactive-switch . "-i")
     (remote-shell-login-switch . "-l")))
-(defvar files-x-test--variables2
+(defconst files-x-test--variables2
   '((remote-shell-file-name . "/bin/ksh")))
-(defvar files-x-test--variables3
+(defconst files-x-test--variables3
   '((remote-null-device . "/dev/null")))
-(defvar files-x-test--variables4
+(defconst files-x-test--variables4
   '((remote-null-device . "null")))
 
-(ert-deftest files-x-test-connection-local-set-class-variables ()
-  "Test setting connection-local class variables."
-
-  ;; Declare (CLASS VARIABLES) objects.
-  (let (connection-local-class-alist connection-local-criteria-alist)
-    (connection-local-set-class-variables 'remote-bash files-x-test--variables1)
+(defconst files-x-test--application '(:application 'my-application))
+(defconst files-x-test--another-application
+  '(:application 'another-application))
+(defconst files-x-test--protocol '(:protocol "my-protocol"))
+(defconst files-x-test--user '(:user "my-user"))
+(defconst files-x-test--machine '(:machine "my-machine"))
+
+(defvar files-x-test--criteria nil)
+(defconst files-x-test--criteria1
+  (append files-x-test--application files-x-test--protocol
+          files-x-test--user files-x-test--machine))
+(defconst files-x-test--criteria2
+  (append files-x-test--another-application files-x-test--protocol
+          files-x-test--user files-x-test--machine))
+
+(ert-deftest files-x-test-connection-local-set-profile-variables ()
+  "Test setting connection-local profile variables."
+
+  ;; Declare (PROFILE VARIABLES) objects.
+  (let (connection-local-profile-alist connection-local-criteria-alist)
+    (connection-local-set-profile-variables
+     'remote-bash files-x-test--variables1)
     (should
      (equal
-      (connection-local-get-class-variables 'remote-bash)
+      (connection-local-get-profile-variables 'remote-bash)
       files-x-test--variables1))
 
-    (connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
+    (connection-local-set-profile-variables
+     'remote-ksh files-x-test--variables2)
     (should
      (equal
-      (connection-local-get-class-variables 'remote-ksh)
+      (connection-local-get-profile-variables 'remote-ksh)
       files-x-test--variables2))
 
-    (connection-local-set-class-variables
+    (connection-local-set-profile-variables
      'remote-nullfile files-x-test--variables3)
     (should
      (equal
-      (connection-local-get-class-variables 'remote-nullfile)
+      (connection-local-get-profile-variables 'remote-nullfile)
       files-x-test--variables3))
 
     ;; A redefinition overwrites existing values.
-    (connection-local-set-class-variables
+    (connection-local-set-profile-variables
      'remote-nullfile files-x-test--variables4)
     (should
      (equal
-      (connection-local-get-class-variables 'remote-nullfile)
+      (connection-local-get-profile-variables 'remote-nullfile)
       files-x-test--variables4))))
 
-(ert-deftest files-x-test-connection-local-set-classes ()
-  "Test setting connection-local classes."
+(ert-deftest files-x-test-connection-local-set-profiles ()
+  "Test setting connection-local profiles."
 
-  ;; Declare (CRITERIA CLASSES) objects.
-  (let (connection-local-class-alist connection-local-criteria-alist)
-    (connection-local-set-class-variables 'remote-bash files-x-test--variables1)
-    (connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
-    (connection-local-set-class-variables
+  ;; Declare (CRITERIA PROFILES) objects.
+  (let (connection-local-profile-alist connection-local-criteria-alist)
+    (connection-local-set-profile-variables
+     'remote-bash files-x-test--variables1)
+    (connection-local-set-profile-variables
+     'remote-ksh files-x-test--variables2)
+    (connection-local-set-profile-variables
      'remote-nullfile files-x-test--variables3)
 
-    (connection-local-set-classes
-     files-x-test--criteria1 'remote-bash 'remote-ksh)
+    ;; Use a criteria with all properties.
+    (setq files-x-test--criteria
+          (append files-x-test--application files-x-test--protocol
+                  files-x-test--user files-x-test--machine))
+    ;; An empty variable list is accepted (but makes no sense).
+    (connection-local-set-profiles files-x-test--criteria)
+    (should-not (connection-local-get-profiles files-x-test--criteria))
+    (connection-local-set-profiles
+     files-x-test--criteria 'remote-bash 'remote-ksh)
     (should
      (equal
-      (connection-local-get-classes files-x-test--criteria1)
+      (connection-local-get-profiles files-x-test--criteria)
       '(remote-bash remote-ksh)))
-
-    (connection-local-set-classes files-x-test--criteria2 'remote-ksh)
+    ;; Changing the order of properties doesn't matter.
+    (setq files-x-test--criteria
+          (append files-x-test--protocol files-x-test--application
+                  files-x-test--machine files-x-test--user))
     (should
      (equal
-      (connection-local-get-classes files-x-test--criteria2)
-      '(remote-ksh)))
-    ;; A further call adds classes.
-    (connection-local-set-classes files-x-test--criteria2 'remote-nullfile)
+      (connection-local-get-profiles files-x-test--criteria)
+      '(remote-bash remote-ksh)))
+     ;; A further call adds profiles.
+    (connection-local-set-profiles files-x-test--criteria 'remote-nullfile)
     (should
      (equal
-      (connection-local-get-classes files-x-test--criteria2)
-      '(remote-ksh remote-nullfile)))
-    ;; Adding existing classes doesn't matter.
-    (connection-local-set-classes
-     files-x-test--criteria2 'remote-bash 'remote-nullfile)
+      (connection-local-get-profiles files-x-test--criteria)
+      '(remote-bash remote-ksh remote-nullfile)))
+    ;; Adding existing profiles doesn't matter.
+    (connection-local-set-profiles
+     files-x-test--criteria 'remote-bash 'remote-nullfile)
     (should
      (equal
-      (connection-local-get-classes files-x-test--criteria2)
-      '(remote-ksh remote-nullfile remote-bash)))
-
-    ;; An empty variable list is accepted (but makes no sense).
-    (connection-local-set-classes files-x-test--criteria3)
-    (should-not (connection-local-get-classes files-x-test--criteria3))
+      (connection-local-get-profiles files-x-test--criteria)
+      '(remote-bash remote-ksh remote-nullfile)))
+
+    ;; Use a criteria without application.
+    (setq files-x-test--criteria
+          (append files-x-test--protocol
+                  files-x-test--user files-x-test--machine))
+    (connection-local-set-profiles files-x-test--criteria 'remote-ksh)
+    (should
+     (equal
+      (connection-local-get-profiles files-x-test--criteria)
+      '(remote-ksh)))
+    ;; An application not used in any registered criteria matches also this.
+    (setq files-x-test--criteria
+          (append files-x-test--another-application files-x-test--protocol
+                  files-x-test--user files-x-test--machine))
+    (should
+     (equal
+      (connection-local-get-profiles files-x-test--criteria)
+      '(remote-ksh)))
 
-    ;; Using a nil criteria also works.  Duplicate classes are trashed.
-    (connection-local-set-classes
-     files-x-test--criteria3 'remote-bash 'remote-ksh 'remote-ksh 'remote-bash)
+    ;; Using a nil criteria also works.  Duplicate profiles are trashed.
+    (connection-local-set-profiles
+     nil 'remote-bash 'remote-ksh 'remote-ksh 'remote-bash)
     (should
      (equal
-      (connection-local-get-classes files-x-test--criteria3)
+      (connection-local-get-profiles nil)
       '(remote-bash remote-ksh)))
 
-    ;; A criteria other than nil, regexp or lambda function is wrong.
-    (should-error (connection-local-set-classes 'dummy))))
+    ;; A criteria other than plist is wrong.
+    (should-error (connection-local-set-profiles 'dummy))))
 
 (ert-deftest files-x-test-hack-connection-local-variables-apply ()
   "Test setting connection-local variables."
 
-  (let (connection-local-class-alist connection-local-criteria-alist)
+  (let (connection-local-profile-alist connection-local-criteria-alist)
 
-    (connection-local-set-class-variables 'remote-bash files-x-test--variables1)
-    (connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
-    (connection-local-set-class-variables
+    (connection-local-set-profile-variables
+     'remote-bash files-x-test--variables1)
+    (connection-local-set-profile-variables
+     'remote-ksh files-x-test--variables2)
+    (connection-local-set-profile-variables
      'remote-nullfile files-x-test--variables3)
 
-    (connection-local-set-classes
+    (connection-local-set-profiles
      files-x-test--criteria1 'remote-bash 'remote-ksh)
-    (connection-local-set-classes
+    (connection-local-set-profiles
      files-x-test--criteria2 'remote-ksh 'remote-nullfile)
 
     ;; Apply the variables.
     (with-temp-buffer
-      (let ((enable-connection-local-variables t)
-            (default-directory "/sudo:my-user@my-remote-host:"))
+      (let ((enable-connection-local-variables t))
         (should-not connection-local-variables-alist)
         (should-not (local-variable-p 'remote-shell-file-name))
         (should-not (boundp 'remote-shell-file-name))
-        (hack-connection-local-variables-apply)
+        (hack-connection-local-variables-apply files-x-test--criteria1)
         ;; All connection-local variables are set.  They apply in
         ;; reverse order in `connection-local-variables-alist'.  The
         ;; settings from `remote-ksh' are not contained, because they
@@ -163,12 +200,11 @@
 
     ;; The second test case.
     (with-temp-buffer
-      (let ((enable-connection-local-variables t)
-            (default-directory "/ssh:another-user@my-remote-host:"))
+      (let ((enable-connection-local-variables t))
         (should-not connection-local-variables-alist)
         (should-not (local-variable-p 'remote-shell-file-name))
         (should-not (boundp 'remote-shell-file-name))
-        (hack-connection-local-variables-apply)
+        (hack-connection-local-variables-apply files-x-test--criteria2)
         ;; All connection-local variables are set.  They apply in
         ;; reverse order in `connection-local-variables-alist'.
         (should
@@ -182,18 +218,17 @@
         (should
          (string-equal (symbol-value 'remote-shell-file-name) "/bin/ksh"))))
 
-    ;; The third test case.  Both `files-x-test--criteria1' and
-    ;; `files-x-test--criteria3' apply, but there are no double
+    ;; The third test case.  Both criteria `files-x-test--criteria1'
+    ;; and `files-x-test--criteria2' apply, but there are no double
     ;; entries.
-    (connection-local-set-classes
-     files-x-test--criteria3 'remote-bash 'remote-ksh)
+    (connection-local-set-profiles
+     nil 'remote-bash 'remote-ksh)
     (with-temp-buffer
-      (let ((enable-connection-local-variables t)
-            (default-directory "/sudo:my-user@my-remote-host:"))
+      (let ((enable-connection-local-variables t))
         (should-not connection-local-variables-alist)
         (should-not (local-variable-p 'remote-shell-file-name))
         (should-not (boundp 'remote-shell-file-name))
-        (hack-connection-local-variables-apply)
+        (hack-connection-local-variables-apply nil)
         ;; All connection-local variables are set.  They apply in
         ;; reverse order in `connection-local-variables-alist'.  The
         ;; settings from `remote-ksh' are not contained, because they
@@ -209,31 +244,32 @@
 
     ;; When `enable-connection-local-variables' is nil, nothing happens.
     (with-temp-buffer
-      (let ((enable-connection-local-variables nil)
-            (default-directory "/ssh:another-user@my-remote-host:"))
+      (let ((enable-connection-local-variables nil))
         (should-not connection-local-variables-alist)
         (should-not (local-variable-p 'remote-shell-file-name))
         (should-not (boundp 'remote-shell-file-name))
-        (hack-connection-local-variables-apply)
+        (hack-connection-local-variables-apply nil)
         (should-not connection-local-variables-alist)
         (should-not (local-variable-p 'remote-shell-file-name))
         (should-not (boundp 'remote-shell-file-name))))))
 
-(ert-deftest files-x-test-with-connection-local-classes ()
+(ert-deftest files-x-test-with-connection-local-profiles ()
   "Test setting connection-local variables."
 
-  (let (connection-local-class-alist connection-local-criteria-alist)
-    (connection-local-set-class-variables 'remote-bash files-x-test--variables1)
-    (connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
-    (connection-local-set-class-variables
+  (let (connection-local-profile-alist connection-local-criteria-alist)
+    (connection-local-set-profile-variables
+     'remote-bash files-x-test--variables1)
+    (connection-local-set-profile-variables
+     'remote-ksh files-x-test--variables2)
+    (connection-local-set-profile-variables
      'remote-nullfile files-x-test--variables3)
-    (connection-local-set-classes
-     files-x-test--criteria3 'remote-ksh 'remote-nullfile)
+
+    (connection-local-set-profiles
+     nil 'remote-ksh 'remote-nullfile)
 
     (with-temp-buffer
-      (let ((enable-connection-local-variables t)
-            (default-directory "/sudo:my-user@my-remote-host:"))
-        (hack-connection-local-variables-apply)
+      (let ((enable-connection-local-variables t))
+        (hack-connection-local-variables-apply nil)
 
 	;; All connection-local variables are set.  They apply in
         ;; reverse order in `connection-local-variables-alist'.
@@ -255,7 +291,7 @@
         (should-not (local-variable-p 'remote-shell-command-switch))
 
 	;; Use the macro.
-        (with-connection-local-classes '(remote-bash remote-ksh)
+        (with-connection-local-profiles '(remote-bash remote-ksh)
           ;; All connection-local variables are set.  They apply in
           ;; reverse order in `connection-local-variables-alist'.
           ;; This variable keeps only the variables to be set inside