Template:Block bug documentation

From Osolia Wiki

If the block-formatted content uses a named parameter (including |1=) and begins with a list (or any other wikimarkup that is dependent upon a specific markup character being at the beginning of a line), because MediaWiki behavior is to strip whitespace from named parameters, a <nowiki /> and a new line must exist before the list (or whatever) starts. This no longer affects unnamed parameters. Compare:

  code result
Works as intended {{Block bug documentation|
*Firstly, ...
*Secondly, ...
*Thirdly, ...
}}
Template:Error
FAIL {{Block bug documentation|1=
*Firstly, ...
*Secondly, ...
*Thirdly, ...
}}
Template:Error
Works as intended {{Block bug documentation|1=<nowiki />
*Firstly, ...
*Secondly, ...
*Thirdly, ...
}}
Template:Error

To embed a table in block markup like this, the block template's content parameter must be named or numbered and include the self-closing nowiki – as in |1=<nowiki /> – then every | character in the table markup must be escaped with {{!}}. An alternative is to use explicit HTML <table>, <tr>, <th>, and <td> markup.