* lisp/net/tramp.el (tramp-call-process): Add traces.

1 files changed, 15 insertions, 6 deletions

diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index 6cc8275b327..29a7b95357c 100644
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -4122,12 +4122,21 @@ This is needed because for some Emacs flavors Tramp has
 defadvised `call-process' to behave like `process-file'.  The
 Lisp error raised when PROGRAM is nil is trapped also, returning 1.
 Furthermore, traces are written with verbosity of 6."
-  (tramp-message
-   (vector tramp-current-method tramp-current-user tramp-current-host nil nil)
-   6 "`%s %s' %s %s" program (mapconcat 'identity args " ") infile destination)
-  (if (executable-find program)
-      (apply 'call-process program infile destination display args)
-    1))
+  (let ((v (vector tramp-current-method tramp-current-user tramp-current-host
+                   nil nil))
+        (result 1))
+    (tramp-message
+     v 6 "`%s %s' %s %s"
+     program (mapconcat 'identity args " ") infile destination)
+    (when (executable-find program)
+      (with-temp-buffer
+        (setq result
+              (apply
+               'call-process program infile (or destination t) display args))
+        (with-current-buffer
+            (if (bufferp destination) destination (current-buffer))
+          (tramp-message v 6 "%d\n%s" result (buffer-string)))))
+    result))
 
 ;;;###tramp-autoload
 (defun tramp-read-passwd (proc &optional prompt)