Add 'remote-file-error' for Tramp

* doc/lispref/errors.texi (Standard Errors): Add 'remote-file-error'.

* etc/NEWS: Mention 'remote-file-error'.

* lisp/net/ange-ftp.el (ftp-error): Add error condition
`remote-file-error'.

* lisp/net/tramp-cmds.el (tramp-cleanup-all-connections): Do not set
`tramp-locked'.

* lisp/net/tramp-compat.el (remote-file-error): Define if it
doesn't exist.

* lisp/net/tramp-sh.el (tramp-timeout-session): Check for "locked"
property.
(tramp-maybe-open-connection): Simplify.

* lisp/net/tramp.el (tramp-locked, tramp-locker): Remove them.
(tramp-file-name-handler): Do not set them.
(with-tramp-locked-connection): New defmacro.
(tramp-accept-process-output, tramp-send-string): Use it.

* src/fileio.c (Qremote_file_error): New error symbol.

* test/lisp/net/tramp-tests.el (tramp-test43-asynchronous-requests):
Adapt test.  Remove :unstable tag.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/fileio.c b/src/fileio.c
index 702c1438283..c97f4daf20c 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -6259,6 +6259,7 @@ syms_of_fileio (void)
   DEFSYM (Qfile_date_error, "file-date-error");
   DEFSYM (Qfile_missing, "file-missing");
   DEFSYM (Qfile_notify_error, "file-notify-error");
+  DEFSYM (Qremote_file_error, "remote-file-error");
   DEFSYM (Qexcl, "excl");
 
   DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system,
@@ -6320,6 +6321,11 @@ behaves as if file names were encoded in `utf-8'.  */);
   Fput (Qfile_notify_error, Qerror_message,
         build_pure_c_string ("File notification error"));
 
+  Fput (Qremote_file_error, Qerror_conditions,
+        Fpurecopy (list3 (Qremote_file_error, Qfile_error, Qerror)));
+  Fput (Qremote_file_error, Qerror_message,
+        build_pure_c_string ("Remote file error"));
+
   DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist,
                doc: /* Alist of elements (REGEXP . HANDLER) for file names handled specially.
 If a file name matches REGEXP, all I/O on that file is done by calling