German umlaut not correct replaced...

[Dexus]

i have "datenschurtzerklärung" as slug, but it will not be "datenschutzerklaerung" it gets "datenschutzerla_rung" with option {lang:'de',seperator:'_'}

Additional: Running on MacOS High Sierra and Linux Ubuntu 18.04 same problem

[kwiatkk1]

Hi, the reason is that you can represent ä in many ways in unicode string (ä or a\u0308). If you use latter, a combining character (https://www.fileformat.info/info/unicode/char/0308/index.htm), then transliteration breaks, as it process string char by char.

The solution is to use https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize before transliteration. See #126 that contains proposed solution.

[Dexus]

Thanks, that will help.

[Dexus]

BTW: https://github.com/walling/unorm would help for 0.10.x