From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rasmus <rasmus@gmx.us>
Subject: Re: org-html-h
Date: Mon, 26 Jan 2015 21:50:09 +0100
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Hi Sébastien,

Sébastien Brisard <sebastien.brisard@m4x.org> writes:

> my blog (sbrisard.github.io) is entirely written with
> org-mode. 

Looks pretty.

> Org-mode offers everything I need, except for one minor
> detail. It is very difficult to include the same CSS file in the
> html-head of several files located at various levels of the directory
> hierarchy.
> I do not really like this trick
> http://orgmode.org/worg/org-tutorials/org-publish-html-tutorial.html#sec-6. For
> the time being, I configured several projects (one for each level),
> see https://github.com/sbrisard/blog/blob/master/sb-blog.el. But I am
> not happy with this solution either.
> I think that it would be great if org-html-head and
> org-html-head-extra behaved as org-html-preamble and
> org-html-postamble, which can be set to either a string, or a
> function. This offers great flexibility for the configuration of the
> pre/postamble (I use it to conditionnaly include DISQUS comments in
> the postamble).
> Would it be possible to mimick the same behavior with org-html-head
> and org-html-head-extra? Or would this be too much work?

You could use macros:

#+MACRO: my-style (eval (concat "#+HTML_HEAD_EXTRA: " (if t "<style></>" "<no-style></>")))
{{{my-style}}}

But for this problem you could just the absolute path to the CSS:
    http://my.url/theme.css, I guess.

Preferably via ox-publish.

Hope it helps,
Rasmus

-- 
May the Force be with you