IDNA behavior

The following looks at normalization behavior in browsers.

Corrigendum #4: Five Unihan Canonical Mapping Errors

Example

    • 2F868 (㛼) = xn--g22n

    • 3.2 normalization => xn--j74i = 2136A (𡍪)

    • 5.2 normalization => xn--snl = 36FC (㛼)

Behavior

    • IE - 3.2

    • Chrome/Safari - 3.2

  • FF - 5.2

Corrigendum #5: Normalization Idempotency

Example

    • 1100 0300 1161 0323 (ᄀ̀ᅡ̣) = xn--ksa4ez54cela

    • 3.2 normalization => xn--ksa4ez795d = AC00 0300 0323 (가̣̀)

    • => xn--ksa3e0795d = AC00 0323 0300 (가̣̀)

    • 5.2 normalization => xn--ksa4ez54cela = 1100 0300 1161 0323 (ᄀ̀ᅡ̣)

Behavior

  • IE - 5.2

    • Chrome/Safari - 3.2

  • FF - 3.2 -- applied twice!

Same thing happens with Indic example:

    • 0BC6 0300 0BBE 0323 (ெ̀ா̣) = xn--ksa4e234a4a.com

    • 3.2 normalization =...

    • 5.2 normalization = ...