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(Created page with "<nowiki></nowiki><noinclude> This empty template is useful for introducing spaces or line breaks in places where they would normally be auto-removed. To explain why this is needed, let's look at the following code first: <pre> Paragraph 1 {{#if: condition | Paragraph 2 }} Paragraph 3 </pre> If all the conditions are met, it works fine: Paragraph 1 {{#if: condition | Paragraph 2 }} Paragraph 3 But if some of the conditions aren't met, it will produce too m...") |
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</pre> | </pre> | ||
If all the | If all the condition is met, it works fine: | ||
Paragraph 1 | Paragraph 1 | ||
Line 24: | Line 24: | ||
Paragraph 3 | Paragraph 3 | ||
But if | But if the condition isn't met, it will produce too much empty space, like this: | ||
Paragraph 1 | Paragraph 1 | ||
Line 45: | Line 45: | ||
</pre> | </pre> | ||
That works exactly as desired when the | That works exactly as desired when the condition ''isn't'' met: | ||
Paragraph 1 {{#if: | | Paragraph 1 {{#if: | | ||
Line 54: | Line 54: | ||
Paragraph 3 | Paragraph 3 | ||
But... When the | But... When the condition ''is'' met, it doesn't work as expected! It does this weird thing instead: | ||
Paragraph 1 {{#if: condition | | Paragraph 1 {{#if: condition | | ||
Line 63: | Line 63: | ||
Paragraph 3 | Paragraph 3 | ||
Why does that happen? It's because parser functions like {{code|#if}} strip all blanks (spaces and line breaks) that come before and after the | Why does that happen? It's because parser functions like {{code|#if}} strip all blanks (spaces and line breaks) that come before the first non-blank character, and after the last non-blank character. So the line breaks after {{code|<nowiki>{{#if: condition |</nowiki>}} are completely ignored! | ||
This can be solved with the following trick. Note the use of the empty {{code|nowiki}} tag: | This can be solved with the following trick. Note the use of the empty {{code|nowiki}} tag: | ||
Line 88: | Line 88: | ||
Paragraph 3 | Paragraph 3 | ||
</pre> | </pre> | ||
Result: | |||
Paragraph 1 {{#if: condition | {{blank}} | |||
Paragraph 2 | |||
}} | |||
Paragraph 3 | |||
</noinclude> | </noinclude> |