Sent the message too quickly.
Obviously, you will have to adapt the paths in w32-shell-execute with your
own setup and the location of files you want to open.
WSL allows different options to mount your NTFS drive or to create links
between directories.

Regards,

Fabrice

Le ven. 27 déc. 2019 à 18:25, Fabrice Popineau <
fabrice.popineau@centralesupelec.fr> a écrit :

> Hi,
>
> I had to solve this problem too.
>
> I used these functions:
>
>   (defun w32-shell-execute (operation document &optional parameters
> show-flag)
>     (if (and operation (not (string= "open" operation)))
>         (error "Don't know how to %s %s" operation document)
>       (call-process "/mnt/c/Windows/System32/cmd.exe" nil nil t "/c"
> "start" "\"\""
>                     (concat ""
>                             (replace-regexp-in-string "^/mnt/c/" "c:/"
>
> (replace-regexp-in-string "^\\(/mnt/c\\)?/home/Fabrice/" "c:/home/"
> document))
>                             ""))))
>   (defun wsl-open-url (url &rest args)
>     (w32-shell-execute "open" url))
>
>     (setq browse-url-browser-function #'wsl-open-url)
>     (setq browse-url-mailto-function #'wsl-open-url)
>
> Regards,
>
> Fabrice
>
> Le ven. 27 déc. 2019 à 18:10, Steve Miano <stevem995@comcast.net> a
> écrit :
>
>> On WSL, using emacs 25.1, in org-mode there is a bug/design issue.
>>
>> It the issue is:
>> When opening a link in org-mode using C-c C-o, org-open-at-point doesn't
>> work. It does find the browser, if you have set
>>
>> (setq browse-url-firefox-program "/mnt/c/PROGRA~1/MOZILL~1/firefox.exe")
>>
>> and does run the process, but it doesn't bring up a browser. You can
>> see the process in list-processes and if you run that command in the
>> console it works, but in org-mode the console never show and the
>> process remains.
>>
>> The function browse-url-default-browse finds and runs the correct
>> browser. However, it runs the browser using the wrong command
>> depending on the case. If you are on WSL, without the graphical
>> interface, you need to run the shell-command to use the windows
>> browser. This is how it is done when it detects cygwin using
>> system-type. However, System-type cannot be used to detect WSL because
>> it doesn't find that you are on windows. The uname command detects it.
>>
>> Obviously this isn't straight forward as in different situations you
>> want to do different things, graphical vs non-graphical. Perhaps
>> modify the function which sets system-type to return wsl then detect
>> graphical environment and use the non shell-command approach?
>>
>> I humbly bring this to your attention. Thanks in advance.
>>
>>
>> Emacs  : GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
>>   of 2017-09-15, modified by Debian
>> Package: Org mode version 9.1.14 (9.1.14-9-g131531-elpa @
>> /home/XXXX/.emacs.d/elpa/org-20181112/)
>>
>> current state:
>> ==============
>> (setq
>>   org-src-lang-modes '(("python" . python) ("plantuml" . fundamental)
>> ("ocaml" . tuareg) ("elisp" . emacs-lisp) ("ditaa" . artist)
>> ("asymptote" . asy)
>>                        ("dot" . fundamental) ("sqlite" . sql) ("calc" .
>> fundamental) ("C" . c) ("cpp" . c++) ("C++" . c++) ("screen" .
>> shell-script)
>>                        ("shell" . sh) ("bash" . sh))
>>   org-tab-first-hook '(org-babel-hide-result-toggle-maybe
>> org-babel-header-arg-expand)
>>   org-babel-results-keyword "results"
>>   org-speed-command-hook '(org-speed-command-activate
>> org-babel-speed-command-activate)
>>   org-occur-hook '(org-first-headline-recenter)
>>   org-metaup-hook '(org-babel-load-in-session-maybe)
>>   org-log-done t
>>   org-confirm-shell-link-function 'yes-or-no-p
>>   org-link-search-must-match-exact-headline nil
>>   org-default-notes-file "~/org/notes.org"
>>   org-after-todo-state-change-hook '(org-clock-out-if-current)
>>   org-from-is-user-regexp "\\<XXXXXX-XXXXXX\\>"
>>   org-src-mode-hook '(org-src-babel-configure-edit-buffer
>> org-src-mode-configure-edit-buffer)
>>   org-agenda-before-write-hook '(org-agenda-add-entry-text)
>>   org-babel-pre-tangle-hook '(save-buffer)
>>   org-table-use-standard-references t
>>   org-font-lock-set-keywor
>>
>>
>>
>
> --
> Fabrice Popineau
> -----------------------------
> CentraleSupelec
> Département Informatique
> 3, rue Joliot Curie
> 91192 Gif/Yvette Cedex
> Tel direct : +33 (0) 169851950
> Standard : +33 (0) 169851212
> ------------------------------
>
>

-- 
Fabrice Popineau
-----------------------------
CentraleSupelec
Département Informatique
3, rue Joliot Curie
91192 Gif/Yvette Cedex
Tel direct : +33 (0) 169851950
Standard : +33 (0) 169851212
------------------------------