Some tags (like  <math>) have their own parsers, other's (like <ref>) use the MediaWiki parser with some custom behaviour added. There's no internal mechanism to convert any tag extension into MediaWiki markup that would render the output of the tag extension (there could be for some tags, but there isn't, and probably won't be because there is no markup that works for some tags). Therefore, if you want to parse tags (like <math> or <ref>) you either need to install a MediaWiki or emulate the behaviour manually (for example by parsing the contents of the <ref> section using the API).  

Conrad



On 15 October 2010 12:55, Gabriel Sandor <gabi.t.sandor@gmail.com> wrote:
Thanks for your answers....
So basically you're saying that for no wikitag the templates that are enclosed by it are guaranteed to be expanded ? Or is it just for <ref> and a few other wikitags ? Or is it rather for specific combinations of wikitags and templates ? I'm sorry for keep asking this but unfortunately i couldn't find anything in the documentation that could make it clear for me. I'm experimenting now with the Special:ExpandTemplates page but i still can't reach a definite conclusion.



On Fri, Oct 15, 2010 at 1:47 PM, Conrad Irwin <conrad.irwin@gmail.com> wrote:
The parser converts tags to __UNIQ__ tokens while parsing and then expands these (either to original input, or to extension output) right at the end. Because you are doing expandtemplates, the __UNIQ__ tokens are expanded to the original wikitext instead of the rendered contents.

Tag extension output is arbitrary HTML, so putting the rendered contents would not be correct for just "expandtemplates" in many cases. Adding another mechanism to the tag hooks API so that they can opt to return "this is the wikitext I would have rendered" would be possible, if confusing (we'd then have some tag hooks returning input wikitext if they didn't, or couldn't realistically, support the new API).

Conrad


On 15 October 2010 11:07, Bryan Tong Minh <bryan.tongminh@gmail.com> wrote:
On Thu, Oct 14, 2010 at 4:52 PM, Gabriel Sandor <gabi.t.sandor@gmail.com> wrote:
> However, i soon found out that not all of the templates are actually
> expanded, the exception being those templates enclosed in wiki tags, which
> are left unexpanded (perhaps the most common example being {{cite ...}}
> templates inside <ref></ref> tags).
>

It appears to be that this happens indeed for <ref> tags. These tags
are part of extension Cite. Cite normally takes those tags, removes
them an relocates them to the location of the <references /> tag.

I'm guessing here, but what I think happens is that extension Cite
only does this in the parsing stage, so in the preprocessing stage
nothing is processed. Perhaps somebody with parser and Cite knowledge
can elaborate a bit more on this?


Bryan

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