How can I remove diacritics (umlauts) from a String?

问题

How can I convert a string, such as Příliš žluťoučký kůň úpěl ďábelské ódy. into Prilis zlutoucky kun upel dabelske ody.?

The source string is in Unicode, so in principle it should be possible to use normalization/decomposition to separate the umlaut.

Unfortunately I didn't see any library in Pharo (maybe Zinc hidden somewhere?) that would support either stripping umlauts or decomposition.

回答1:

You can try Diacriticals package

Installation

Metacello new
    smalltalkhubUser: 'Pharo' project: 'MetaRepoForPharo50';
    configuration: 'Diacritics';
    version: #development;
    load.

Test

'Příliš žluťoučký kůň úpěl ďábelské ódy' asNonDiacritical.
 "'Prilis zlutoucky kun upel dabelske ody'"

回答2:

There isn't, as far as I'm aware of and the algorithm's that can do this are quite costly, so you'll probably not want to use Smalltalk implementation of them. At the company I work, we created a VM plugin that makes the calls to libicu. That way we don't have to maintain a separate implementation and profit from native speed. See ICU for reference.

来源：https://stackoverflow.com/questions/38724281/how-can-i-remove-diacritics-umlauts-from-a-string