bug#17900: 24.4.50; Tramp Does not recognize .ssh/config file

[Ram Balachandran <janarcs@umich.edu>]

I'm trying to open server files through tramp where the server login. I
created a .ssh/config file to set ControlMaster to 'auto'. However this
file is not recognized by Emacs in Tramp mode which asks me to provide
login credentials again. The tramp mode gets hung if rsa token id is
required as part of login credentials. 



In GNU Emacs 24.4.50.1 (x86_64-apple-darwin13.2.0, NS appkit-1265.20 Version 10.9.3 (Build 13D65))
of 2014-06-29 on builder10-9.porkrind.org
Windowing system distributor `Apple', version 10.3.1265
Configured using:
`configure --with-ns'

Configured features:
ACL ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-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
  global-visual-line-mode: t
  visual-line-mode: t

Recent input:
<return> <down-mouse-1> <mouse-1> <help-echo> <down-mouse-1> 
<mouse-1> ~ / m <tab> <tab> y <tab> D <tab> <tab> v 
a <tab> P O S <tab> <return> <help-echo> <down-mouse-1> 
<mouse-1> C-x C-f <backspace> <backspace> / s s h : 
j a n a r c s @ f l u x - l o g i n : <return> <down-mouse-1> 
<mouse-1> <menu-bar> <buffer> C-a <down-mouse-1> <mouse-1> 
C-x C-f <help-echo> <help-echo> <menu-bar> <buffer> 
C-a C-x C-f v a <tab> P O T <tab> <return> <wheel-down> 
<double-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <wheel-down> <double-wheel-down> 
<triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> 
<triple-wheel-up> C-x C-f <tab> v a <tab> K P O <tab> 
<return> <help-echo> <help-echo> <menu-bar> <buffer> 
C-a <down-mouse-1> <mouse-1> <up> C-x C-f v r h f i 
n <down-mouse-1> <mouse-1> <help-echo> C-g C-s <help-echo> 
<down-mouse-1> <mouse-1> <help-echo> <help-echo> C-s 
C-s C-g v r h f i n C-r C-r C-s C-s C-s C-s C-s <wheel-down> 
<double-wheel-down> <triple-wheel-down> <triple-wheel-down> 
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <wheel-down> <double-wheel-down> 
<triple-wheel-down> <triple-wheel-down> <wheel-up> 
<double-wheel-up> <triple-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <wheel-down> <wheel-down> <double-wheel-down> 
<triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <down-mouse-1> <mouse-1> <wheel-down> 
<double-wheel-down> <triple-wheel-down> <wheel-up> 
<double-wheel-up> <triple-wheel-up> <triple-wheel-up> 
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <down-mouse-1> <mouse-1> <return> 
<return> <up> <up> # 3 <backspace> # <down> <up> SPC 
<down> # # SPC W h y SPC c e r t a i n SPC M g SPC 
a t o m s SPC a r e SPC a l l o w e d SPC t o SPC r 
e l a x ? <return> # # SPC C-x C-s <down-mouse-1> <mouse-1> 
M-x r e p o r <tab> <return>

Recent messages:
Tramp: Inserting `/ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_KPOINTS'...done
Quit
completing-read-default: Command attempted to use minibuffer while in minibuffer
Mark saved where search started
byte-code: Beginning of buffer [8 times]
Saving file /ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_POSCAR...
Renaming /ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_POSCAR to /ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_POSCAR~...done
Tramp: Encoding local file `/var/folders/1z/m88tdd_n49gdrdh0tyxflsd80000gq/T/tramp.7132G-j' using `(lambda (beg end) (let ((coding-system-for-write (quote binary)) (coding-system-for-read (quote binary))) (apply (quote call-process-region) beg end (car (split-string gzip)) t t nil (cdr (split-string gzip)))) (base64-encode-region (point-min) (point-max)))'...done
Tramp: Decoding remote file `/ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_POSCAR' using `(base64 -d -i | gzip -d >%s)'...done
Wrote /ssh:rbala@hopper.nersc.gov:/global/homes/r/rbala/myDocuments/vasp_sample_POSCAR

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message dired rfc822 mml mml-sec
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils misearch
multi-isearch tramp-cmds tramp-sh tramp-cache tramp tramp-compat
auth-source eieio eieio-core gnus-util mm-util mail-prsvr password-cache
tramp-loaddefs trampver shell org byte-opt bytecomp byte-compile cconv
advice help-fns org-macro org-footnote org-pcomplete pcomplete org-list
org-faces org-entities noutline outline easy-mmode org-version
ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp
ob-comint comint ansi-color ring ob-core ob-eval org-compat org-macs
org-loaddefs format-spec find-func cal-menu easymenu calendar
cal-loaddefs package time-date tooltip electric uniquify ediff-hook
vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process cocoa ns
multi-tty emacs)

Memory information:
((conses 16 143131 7277)
(symbols 48 25389 0)
(miscs 40 141 234)
(strings 32 36683 4857)
(string-bytes 1 1157104)
(vectors 16 18570)
(vector-slots 8 532285 5529)
(floats 8 409 438)
(intervals 56 336 0)
(buffers 960 18))