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Re: How to get the preferred environment variable path separator?
From: |
Alex Vong |
Subject: |
Re: How to get the preferred environment variable path separator? |
Date: |
Mon, 28 Mar 2016 18:00:53 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Hi,
Chris Marusich <address@hidden> writes:
> Hi,
>
> Info node "(guile) File System" describes a procedure for getting the
> preferred file name separator of the operating system:
>
> -- Scheme Variable: file-name-separator-string
> The preferred file name separator.
>
> Note that on MinGW builds for Windows, both ‘/’ and ‘\’ are valid
> separators. Thus, programs should not assume that
> ‘file-name-separator-string’ is the _only_ file name
> separator—e.g., when extracting the components of a file name.
>
>
> Is there an equivalent procedure for getting the preferred environment
> variable path separator, too? I would expect such a procedure to return
> the ":" string (or does it return a character?) on most GNU/Linux
> distributions, since that is the separator e.g. for the PATH environment
> variable.
>
I can't find one either. If the machine has perl/python, you could try
(use-modules (ice-9 rdelim) (ice-9 popen))
(read-line (open-pipe* OPEN_READ
"perl"
"-e"
"use Config; print $Config{path_sep}"))
or
(use-modules (ice-9 rdelim) (ice-9 popen))
(read-line (open-pipe* OPEN_READ
"python"
"-c"
"import os; print(os.pathsep)"))
> While we're on the topic, Guile's manual has a lot of very nice,
> detailed information about each module. However, it does not seem to
> tell me what the name of the modules are. Where can I find out what the
> name of any module described in the manual - e.g. the module which is
> described in the Info node "(guile) POSIX"?
I think the procedures described in (guile) POSIX are distributed in
different modules. E.g, `open-pipe' is located in `(ice-9 popen)', while
`chdir' is in the global namespace.
- How to get the preferred environment variable path separator?, Chris Marusich, 2016/03/28
- Re: How to get the preferred environment variable path separator?,
Alex Vong <=
- Re: How to get the preferred environment variable path separator?, Thompson, David, 2016/03/28
- Re: How to get the preferred environment variable path separator?, Alex Vong, 2016/03/28
- Re: How to get the preferred environment variable path separator?, Thompson, David, 2016/03/28
- Re: How to get the preferred environment variable path separator?, Eli Zaretskii, 2016/03/28
- Re: How to get the preferred environment variable path separator?, Thompson, David, 2016/03/28
- Re: How to get the preferred environment variable path separator?, tomas, 2016/03/29
- Re: How to get the preferred environment variable path separator?, Paul Smith, 2016/03/28
- Re: How to get the preferred environment variable path separator?, Chris Marusich, 2016/03/31