Subject: bug#20237: Emacs built on Windows cannot figure out path correctly

From: Eli Zaretskii <[email-masked]>
Date: Sat, 04 Apr 2015 20:23:42 +0300

[Please don't remove the bug address from the CC list.]

> Date: Sat, 04 Apr 2015 13:09:35 -0400
> From: Da Zhang <[email-masked]>
> 
> Does the following command display?
> 
>   M-: (python-shell-parse-command) RET
> 
> "c\\:/Python27/Scripts/ipython.exe -i --profile=dev --colors=Linux"

Strange, I cannot reproduce this.  Can you step with Edebug through
python-shell-parse-command and see where does this "c\\" prefix gets
added?  If that happens in the call to shell-quote-argument, then
please tell what value does this display:

  M-: (w32-shell-dos-semantics) RET

If this says "nil", then what is the value of (w32-shell-name)?