So I have a MediaWiki template which I use within a table to represent one column. The code looks like this and works as I want it.
<includeonly>{{#if:{{{name|}}}|''{{{name}}}: ''|}}{{#if:{{{food|}}}|+{{Food|{{{food|}}}}}|}} {{#if:{{{condition|}}}|{{{condition|}}}|}}</includeonly>
When I use it with the input
{{Symbiosis|name=Groove|food=10|condition=if next to [[Apple Tree]], [[Dandelion]] or [[Straberry]]}}
I get the folling result which is as desired.
However now I want to extend this template and move the part with the food
definition in another template because I need it elsewhere again. So I make a new ResourceList
template which basically does the same as before.
<includeonly>{{#if:{{{food|}}}|+{{Food|{{{food|}}}}}|}}<includeonly>
and include it in my Symbiosis
template to look like this.
<includeonly>{{#if:{{{name|}}}|''{{{name}}}: ''|}}{{ResourceList|food={{{food}}}}} {{#if:{{{condition|}}}|{{{condition|}}}|}}</includeonly>
But when I now use the same input as above I get a line break in my table to look like this.
Why is this? There are no spaces or linkebreaks in the template definitions. I don't really understand how MediaWiki handles all this, it is quite confusing and somewhat unintuitivive. All this whitespace and line break behavious is driving me nuts... Is there a way to tell MediaWiki that it might ignore all whitespaces and linebreaks within my template definition expect the ones I explecitly want to have?
I can't reproduce your error.
I input all of the code from your second example exactly as written and it turned out like your first example. I tried it by itself and then I tried replicating your table based on the screenshot (see below), and in both cases no errant line break occurred.
{| class="wikitable sortable"
|-
! width="33%" | Column A
! width="34%" | Column B
! width="33%" | Column C
|-
| {{loremipsum}}
| {{Symbiosis|name=Groove|food=10|condition=if next to [[Apple Tree]], [[Dandelion]] or [[Straberry]]}}
| {{loremipsum}}
|}
Are you using a different css class in your table? Because sometimes that can cause unexpected wrapping or paragraph problems.