Module:az-last-vowel

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The following documentation is located at Module:az-last-vowel/documentation. ^[edit]

Useful links: subpage list • links • transclusions • testcases • sandbox

This module helps you retrieve the last vowel in an Azerbaijani word, which is necessary for maintaining the vowel harmony.

Vowels in Azerbaijani

There are 9 vowels in Azerbaijani: a, e, ə, ı, i, o, ö, u, and ü.

As some Azerbaijani suffixes have multiple forms, the last vowel plays a key role when appending suffixes to words. For example, the genitive case suffix, -ın has 4 different forms: -ın, -in, -un, and -ün, and which one to use depends on the last vowel of the lemma. You can read more about it in Module:az-harmony.

How to use

From modules

You can use _main() function, passing the word as an argument, and the function will return the vowel as a string:

local get_last_vowel = require("Module:az-last-vowel")._main
local last_vowel = get_last_vowel("söz") -- returns "ö"

From templates

There is a main() function that wraps the core _main() for templates. You can invoke it with the word as an argument, and it'll return the vowel:

{{#invoke:az-last-vowel|main|nümunə}} <!-- returns "ə" -->

local export = {}

function export._main(str)
  local last_vowel = nil

  for i = mw.ustring.len(str), 1, -1 do
    local char = mw.ustring.sub(str, i, i)

    if mw.ustring.find("AIOUEƏİÖÜaıoueəiöü", char, 1, true) then
      last_vowel = char
      break
    end
  end

  return last_vowel
end

function export.main(frame)
  return export._main(frame:getParent().args[1])
end

return export