bug#28870: 25.3; find-file-at-point with spaces in path

[Guido Kraemer <gkraemer@bgc-jena.mpg.de>]

Dear Emacs maintainers,

find-file-at-point does not work correctly if there are spaces in the 
path, but also exists in emacs 26.0.90.1 to reproduce:

1) create the file "~/new folder/New Folder/New Empty File"
2) emacs -q
3) go to *scratch* buffer
4) put the following in the scratch buffer:

"~/new folder/New Folder/New Empty File"
".emacs.d/init.el"

5) place point on each and run `find-file-at-point`

Observed bevior: the second line works fine, the first line does not
complete correctly, see also here:

https://github.com/syl20bnr/spacemacs/issues/9743

and here

https://stackoverflow.com/questions/46661120/emacs-find-file-at-point-how-to-escape-spaces-in-filepath 






In GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
of 2017-09-13 built on laaja
Repository revision: bd299e7629b76c6d4f053dd9c8fb94987f63b460
Windowing system distributor 'The X.Org Foundation', version 11.0.11804000
System Description: Ubuntu 16.04.3 LTS

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

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

Major mode: Lisp Interaction

Minor modes in effect:
diff-auto-refine-mode: t
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.
Making completion list... [2 times]
Quit
<f1> ESC is undefined
Quit
M-RET is undefined
Making completion list...
You can run the command ‘find-file-at-point’ with M-x f-fi-a RET
Making completion list...
Quit

Load-path shadows:
None found.

Features:
(shadow sort mail-extr vc-git diff-mode easy-mmode ffap thingatpt
url-parse auth-source cl-seq eieio byte-opt bytecomp byte-compile
cl-extra cconv eieio-core cl-macs gv url-vars emacsbug message dired
format-spec rfc822 mml mml-sec password-cache epg epg-config gnus-util
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util help-fns
help-mode easymenu cl-loaddefs pcase cl-lib mail-prsvr mail-utils
time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer 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 slovak czech
european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded 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 dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 112958 9448)
(symbols 48 22095 0)
(miscs 40 1587 143)
(strings 32 22122 3918)
(string-bytes 1 696723)
(vectors 16 15902)
(vector-slots 8 490873 6159)
(floats 8 204 246)
(intervals 56 507 4)
(buffers 976 22)
(heap 1024 39184 1509))

-- 
Guido Kraemer
Max Planck Institute for Biogeochemistry Jena
Department for Biogeochemical Integration
Hans-Knöll-Str. 10
07745 Jena
Germany

phone: +49 3641 576293
e-mail: gkraemer@bgc-jena.mpg.de