Hi Ludovic,

ludo@gnu.org (Ludovic Courtès) writes:

> Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:
>
>> Hello Hartmut,
>>
>> On Tue, Apr 11, 2017 at 10:27 PM, Hartmut Goebel
>> <h.goebel@crazy-compilers.com> wrote:
>>>
>>> Hi,
>>>
>>> I just discovered that libxml2 sets the search-path-specification for
>>> variable "XML_CATALOG_FILES" using space as separator, which is very
>>> uncommon. The documentation for libxml2 does not state which separator
>>> to use, while the docbook-tutorial [1] has an example using colons.
>>>
>>> So I'm curious whether the space is correct.
>>>
>>> [1] <http://tdg.docbook.org/tdg/5.0/appa.html>
>>
>> From my experiences with the udisks package, the XML_CATALOG_FILES
>> entries should be separated by space.
>
> Specifically, catalog.c in libxml2 has this:
>
> 	    /* the XML_CATALOG_FILES envvar is allowed to contain a
> 	       space-separated list of entries. */
> 	    cur = catalogs;
> 	    nextent = &catal->xml;
> 	    while (*cur != '\0') {
> 		while (xmlIsBlank_ch(*cur))
> 		    cur++;
>
> Ludo’.

Thanks for digging this out for us! This will be a good reference for
when this question comes around next time!

Maxim