Template:Terrorist incidents in countryname in YYYY category header/doc

This is a documentation subpage for Template:Terrorist incidents in countryname in YYYY category header. It may contain usage information, categories and other content that is not part of the original template page.

This template employs intricate features of template syntax. You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages. You can conduct experiments, and should test all major changes, in either this template's sandbox, the general template sandbox, or your user space before changing anything here.

Use this to create a category of the form "Terrorist incidents in CountryName in YYYY", where "CountryName" is a valid name of a country and "YYYY" is a 4-digit year.

e.g.

• Category:Terrorist incidents in the United States in 2011

{{Terrorist incidents in countryname in YYYY category header}}

The normal usage requires no parameters, because the template looks up the other data.

e.g. on Category:Terrorist incidents in the United States in 1954, no parameters are needed

The other needed data is:

1. the adjectival form of the country in which the country is located. This is looked up by Template:GetAdjectiveFromCountryName
2. the continent(s) in which the country is located. This is looked up by Template:Country2continent

If either of those lookups fails, then an error is reported unless the required data is supplied by an optional parameter.

That may be due to this category being misnamed, or it may be due to an omission in the lookup table used by Template:GetAdjectiveFromCountryName or Template:Country2continent. (Some former countries may have been omitted. Also, when country has been renamed, the lookup uses only the current country name).

If a lookup fails, then the template creates no output other than an error message. If you are satisfied that the category is correctly named, use the one of the optional parameters below.

• |nationality=Fooish bypasses the lookup of the nationality, and uses "Fooish"
• |continent1=Atlantis bypasses the lookup of the continent, and uses "Atlantis".
• |continent2=Lemuria bypasses the lookup of the continent, and adds a second continent: "Lemuria"
• |parentcountry=AnotherCountry is available for use when a country is part of another country.
  e.g. on Category:Terrorist incidents in England in 2011, use {{Terrorist incidents in countryname in YYYY category header|parentcountry=United Kingdom}}
• |diagnose=yes turns on diagnostics, which may help if the template doesn't work as expected

Use of the |parentcountry= parameter is tracked in:

• Category:Template Terrorist incidents in countryname in YYYY category header with parentcountry (population 0)

Use of the |nationality = parameter is tracked in:

• Category:Template Terrorist incidents in countryname in YYYY category header with nationality parameter (population 0)

Categories where country lookup fails are tracked in a category shared with many other templates:

• Category:Errors reported by other category header templates (population 3)

• Template:Terrorist incidents in countryname in YYYY category header/outer core
• Template:Terrorist incidents in countryname in YYYY category header/inner core