Module:category tree/poscatboiler/data/lang-specific/documentation

This is the documentation page for the main language-specific data module for Module:category tree/poscatboiler, as well as for its submodules. Collectively, these modules handle generating the descriptions and categorization for language-specific category pages of the format "LANG LABEL" (e.g. Category:Bulgarian conjugation 2.1 verbs and Category:Russian velar-stem neuter-form nouns). "Language-specific" means that the category labels (in these examples, "conjugation 2.1 verbs" and "velar-stem neuter-form nouns") are specialized to apply only to particular languages, unlike a category such as Category:Bulgarian verbs or Category:Russian nouns, where the labels "verbs" and "nouns" apply to all languages.

To understand how these data modules work, you should first familiarize yourself with how poscatboiler labels and handlers work in general. See Module:category tree/poscatboiler/data/documentation for information on this.

Language-specific labels and handlers work almost identically to non-language-specific labels and handlers. Labels have the same fields, and handlers are called with the same arguments and should return the same types of objects. The only real difference is that language-specific categories don't normally have corresponding umbrella categories, so there is no need to set the  or   fields.

The language-specific module for a given language should be named  where LANGCODE is the language code for the language in question, e.g. Module:category tree/poscatboiler/data/lang-specific/bg for Bulgarian. To add a new data submodule, copy an existing submodule and modify its contents. Then, add its language code to the  list at the top of Module:category tree/poscatboiler/data/lang-specific. Note that the module for a given language is only loaded when a category referencing that particular language is encountered and the category's label is unrecognized.

Adding, removing or modifying categories
A sample entry is as follows (in this case, found in Module:category tree/poscatboiler/data/lang-specific/be):

labels["verbs by class and accent pattern"] = { description = "Belarusian verbs categorized by class and accent pattern.", parents = , }

See Module:category tree/poscatboiler/data/documentation for more information.

Handlers
A sample handler follows (in this case for Belarusian categories of the form Category:Belarusian class 2 verbs or Category:Belarusian class 4c verbs):

table.insert(handlers, function(data)	local cls, pattern = data.label:match("^class ([0-9]*)([abc]?) verbs")	if cls then		if pattern == "" then			return {				description = " class " .. cls .. " verbs.",				breadcrumb = cls,				parents = ,			}		else			return {				description = " class " .. cls .. " verbs of " ..					"accent pattern " .. pattern .. ". " .. ( pattern == "a" and "With this pattern, all forms are stem-stressed." or pattern == "b" and "With this pattern, all forms are ending-stressed." or "With this pattern, the first singular present indicative and all forms " .. "outside of the present indicative are ending-stressed, while the remaining " .. "forms of the present indicative are stem-stressed." ),				breadcrumb = cls .. pattern,				parents = {					{name = "class " .. cls .. " verbs", sort = pattern},					{name = "verbs by class and accent pattern", sort = cls .. pattern},				},			}		end	end end)

Another example, for categories like Category:Dutch prefixed verbs with ver-:

table.insert(handlers, function(data)	local pref = data.label:match("^prefixed verbs with (.+%-)$")	if pref then		return {			description = " prefixed verbs with the prefix .",			displaytitle = " prefixed verbs with ",			breadcrumb = "",			parents = ,		}	end end)

Here, we use  to italicize the prefix in the title (and also italicize it in the breadcrumb and description). Note the use of the 3 (alternative display form) parameter in the displaytitle and breadcrumb to avoid creating a link; this will cause an error in the displaytitle, and lead to a poor user experience in the breadcrumb.

See Module:category tree/poscatboiler/data/documentation for more information.