Related URL: https://gerrit.wikimedia.org/r/70111 (Gerrit Change I37ec0e152df905844ac58ed1834fca29dccb4eec)

More a question that a bug. How do you specify an alias using templateData? There are lots of examples which use alternate capitalisation for parameters. For example {{Infobox World Heritage Site}}
http://en.wikipedia.org/wiki/Template:Infobox_World_Heritage_Site
uses both 'Image' and 'image' to specify an image. To specify both makes the documentation clumsy. An alias would be ideal.

Also {{Quote}}}
http://en.wikipedia.org/wiki/Template:Quote
can be given in two forms, either positional:
{{quote|phrase|person|source}}
or named:
{{quote|text=phrase|sign=person|source=source}}
Currently both are documented but it would be nicer to use aliases.

See https://www.mediawiki.org/wiki/Extension:TemplateData#Defining_a_TemplateData_block

Example:

{

params: {
  image: {
    label: 'File name',
    ...,
    aliases: ['1', 'Image', 'Filename', .. ]
  }
}

}