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Re: get absolute path of given path

From: Matt Wette
Subject: Re: get absolute path of given path
Date: Sun, 6 Sep 2020 08:20:49 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 9/6/20 8:04 AM, Zelphir Kaltstahl wrote:
Hi Guile Users!

In my explorations into making examples for web development, I came
across the question of how to get an absolute path from any given path.
This is useful for example when checking, whether a path points to
something inside a static assets directory, or perhaps sneakily tries to
escape that and access things it should not.

I found in Guile's manual the function (canonicalize-path path).
However, this function has one problem, which makes it not sufficient on
its own: It raises an exception, when a path given points to something
that does not exist. I would like to have a function, that gives me the
absolute path of any path I give as argument, not only for existing
paths. So i went ahead and wrote the following code

Maybe you would like false-if-exception.

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