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What are the most difficult-to-render Unicode samples?

Tags:

unicode

stress-testing

text-rendering

I'm trying to implement a cross-platform (desktop browsers, iOS, & Android) typography system that allows users to input any Unicode string.

What are some strings I should use to stress-test my system and ensure the most nines of users will have a good experience? Is there a standard or de-facto standard list that I can also use?

like image 903
Ky. Avatar asked Dec 30 '15 22:12

Ky.

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2 Answers

Here are some strings that I use in tests like that:

  • Vertically-stacked characters: Z̤͔ͧ̑̓ä͖̭̈̇lͮ̒ͫǧ̗͚̚o̙̔ͮ̇͐̇
  • Right-to-left words: اختبار النص
  • Mixed-direction words: من left اليمين to الى right اليسار
  • Mixed-direction characters: a‭b‮c‭d‮e‭f‮g
  • Very long characters: ﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽
  • Emoji with skintone variations: 👱👱🏻👱🏼👱🏽👱🏾👱🏿
  • Emoji with gender variations: 🧟‍♀️🧟‍♂️
  • Emoji created by combining codepoints: 👨‍❤️‍💋‍👨👩‍👩‍👧‍👦🏳️‍⚧️🇵🇷
like image 169
Ky. Avatar answered Oct 14 '22 06:10

Ky.

Some others:

  • Reversible characters in Right-to-Left scripts. Ex. Parentheses get reversed for display in Hebrew. Unicode spec has a whole list of these reversible characters.
  • Scripts with letter shaping: Arabic, Hindi, etc.
like image 1
Rich Taylor Avatar answered Oct 14 '22 06:10

Rich Taylor
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