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bug#24665: 25.1; Confusing documentation of Tramp methods

From: Eli Zaretskii
Subject: bug#24665: 25.1; Confusing documentation of Tramp methods
Date: Tue, 11 Oct 2016 14:29:06 +0300

The Tramp manual says in the node External Methods:

  ‘scp’—‘ssh’ and ‘scp’

       Using a combination of ‘ssh’ to connect and ‘scp’ to transfer is
       the most secure.  While the performance is good, it is slower than
       the inline methods for smaller files.  Though there is no overhead
       of encoding and decoding of the inline methods, ‘scp’’s
       cryptographic handshake negates those speed gains.

  ‘pscp’—‘plink’ and ‘pscp’
  ‘psftp’—‘plink’ and ‘psftp’

       These methods are similar to ‘scp’ or ‘sftp’, but they use the
       ‘plink’ command to connect to the remote host, and they use ‘pscp’
       or ‘psftp’ for transferring the files.  These programs are part of
       PuTTY, an SSH implementation for Windows.

This seems to say that a file name like the following should work:


But in reality, Tramp says 'Unknown method "pscp-plink"'.  Using just
"pscp" does work.

So it seems like the above doesn't mean to say I should use
"pscp-plink" literally.  But what _does_ it mean?  I didn't find any
clues neither in the Tramp manual nor in the doc string of

In GNU Emacs 25.1.1 (i686-pc-mingw32)
 of 2016-09-17 built on HOME-C4E4A596F7
Windowing system distributor 'Microsoft Corp.', version 5.1.2600
Configured using:
 'configure --prefix=/d/usr --with-wide-int --with-modules 'CFLAGS=-O2
 -gdwarf-4 -g3''

Configured features:

Important settings:
  value of $LANG: ENU
  locale-coding-system: cp1255

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

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select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian
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custom widget hashtable-print-readable backquote w32notify w32 multi-tty
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Memory information:
((conses 16 93416 6146)
 (symbols 56 20741 0)
 (miscs 48 44 106)
 (strings 16 17774 6292)
 (string-bytes 1 441534)
 (vectors 16 12447)
 (vector-slots 8 432686 5016)
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