* net/tramp.el (tramp-handle-make-auto-save-file-name)

(tramp-completion-dissect-file-name, tramp-find-executable): Use
`mapc' instead of `mapcar'.
(tramp-open-connection-setup-interactive-shell): Send only single
prompt setting commands, in order to avoid double-prompt.

diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index 5a8068320efac3a62105be6534cf7b250183dbf4..d6d6a524be98f913568077c7958df159a6ee00d6 100644 (file)
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -3985,7 +3985,7 @@ Returns a file name in `tramp-auto-save-directory' for autosaving this file."
     ;; UNIQUIFY element of `auto-save-file-name-transforms'); but for
     ;; all other cases we must do it ourselves.
     (when (boundp 'auto-save-file-name-transforms)
-      (mapcar
+      (mapc
        '(lambda (x)
          (when (and (string-match (car x) buffer-file-name)
                     (not (car (cddr x))))
@@ -4768,18 +4768,18 @@ They are collected by `tramp-completion-dissect-file-name1'."
                        "\\(" tramp-host-regexp x-nil   "\\)$")
                1 2 3 nil)))
 
-    (mapcar (lambda (regexp)
-      (add-to-list 'result
-       (tramp-completion-dissect-file-name1 regexp name)))
-      (list
-       tramp-completion-file-name-structure1
-       tramp-completion-file-name-structure2
-       tramp-completion-file-name-structure3
-       tramp-completion-file-name-structure4
-       tramp-completion-file-name-structure5
-       tramp-completion-file-name-structure6
-       tramp-completion-file-name-structure7
-       tramp-file-name-structure))
+    (mapc
+     (lambda (regexp)
+       (add-to-list 'result (tramp-completion-dissect-file-name1 regexp name)))
+     (list
+      tramp-completion-file-name-structure1
+      tramp-completion-file-name-structure2
+      tramp-completion-file-name-structure3
+      tramp-completion-file-name-structure4
+      tramp-completion-file-name-structure5
+      tramp-completion-file-name-structure6
+      tramp-completion-file-name-structure7
+      tramp-file-name-structure))
 
     (delq nil result)))
 
@@ -5264,9 +5264,9 @@ This function expects to be in the right *tramp* buffer."
                      "then echo tramp_executable $d/%s; "
                      "break; fi; done <<'EOF'")
              progname progname progname))
-    (mapcar (lambda (d)
-              (tramp-send-command multi-method method user host d))
-            dirlist)
+    (mapc (lambda (d)
+           (tramp-send-command multi-method method user host d))
+         dirlist)
     (tramp-send-command multi-method method user host "EOF")
     (tramp-wait-for-output)
     (goto-char (point-max))
@@ -6256,9 +6256,18 @@ to set up.  METHOD, USER and HOST specify the connection."
   ;; the last time we sent a command, to avoid tramp-send-command to send
   ;; "echo are you awake".
   (setq tramp-last-cmd-time (current-time))
+  (tramp-send-command-internal multi-method method user host
+                              "PROMPT_COMMAND=''")
+  (erase-buffer)
+  (tramp-send-command-internal multi-method method user host
+                              "PS2=''")
+  (erase-buffer)
+  (tramp-send-command-internal multi-method method user host
+                              "PS3=''")
+  (erase-buffer)
   (tramp-send-command
    multi-method method user host
-   (format "PROMPT_COMMAND=''; PS1='%s%s%s'; PS2=''; PS3=''"
+   (format "PS1='%s%s%s'"
           tramp-rsh-end-of-line
            tramp-end-of-output
           tramp-rsh-end-of-line))