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Re: Request to support Cygwin in convert-standard-filename function

From: Eli Zaretskii
Subject: Re: Request to support Cygwin in convert-standard-filename function
Date: Sun, 12 Jun 2016 10:11:14 +0300

> From: Xi Shen <address@hidden>
> Date: Sun, 12 Jun 2016 02:51:14 +0000
> I encounter a problem with `convert-standard-filename`,
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Standard-File-Names.html.
>  I call this function
> within a Cygwin environment, and this function could not return me a 
> MS-DOS/Windows format path. I think it
> treats Cygwin environment as a normal *nix environment.
> In Cygwin environment, the Emacs has a function called 
> `cygwin-convert-file-name-to-windows` which
> converts a expanded path to a Windows path, e.g.:
> /cygdrive/c/Windows => c:\Windows
> According to the description of the `convert-standard-filename`, it is 
> expected to be used only in places where
> the callee wants to convert a *nix path to the underline OS path. I think it 
> is appropriate we invoke the
> `cygwin-convert-file-name-to-windows` function inside the 
> `convert-standard-filename` function if it is called
> within a Cygwin environment.

Yes, Cygwin is a Posix environment, and convert-standard-filename is
documented to be a no-op in such an environment.

For the conversion you need, you can call
cygwin-convert-file-name-to-windows directly.

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