Category:CS1 errors: empty unknown parameters

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This is a tracking category for CS1 citations that have empty parameter whose names are not known.

  • Cite has empty unknown parameter: |<param>=
  • Cite has empty unknown parameters: |<param1>=, |<param2>=, ...

This error message is hidden. To show this error message see Controlling error message display.

This error message highlights CS1|2 templates that hold empty parameters with names that are not known to CS1|2. This error message is a companion to Unknown parameter |xxxx= ignored.

Empty positional parameters, which typically look like two adjacent pipes in a template, | |, or a pipe and then the end of the template, |}}, are identified as numbered parameters: |1=. Similarly, a pipe followed by an HTML comment that encloses everything before the next pipe or closing brace, | <!--<param name/value pair>--> | will be identified as an empty numbered parameter. Parameters that have both a pipe and an equal sign but do not have a name are identified as empty-string parameters: |= or | =|(empty string)=. Various templates that wrap CS1|2 templates may cause this error when they use constructs like this: |{{#if:{{{2|}}}|title}}={{{2|}}}. When {{{2|}}} does not have a value, the template creates |=.

To resolve this error, remove the extra pipe, correct the parameter name, or remove the parameter from the CS1|2 template.

Pages with this error are automatically placed in Category:CS1 errors: empty unknown parameters.[a]

Notes[change | change source]

  1. Pages in the Book talk, Category talk, Draft talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the tracking categories. In addition, pages with names matching the patterns '/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', and '/[Aa]rchive' are not included in the tracking categories.

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