Zero-width character test

Below are several zero-width Unicode characters, placed between underscores. Can your browser display them? Your text editor? Your terminal? To understand why not being able to display them might be a problem, read:

Tracking via pasted text

As a point of reference, here are a few positive-width Unicode characters:

0020: _ _ | 00E9: _é_ | 03A9: _Ω_ | 5B57: _字_ | 1F407: _🐇_

Zero-width characters

 0016: __ synchronous idle

 034F: _͏_ combining grapheme joiner

 061C: _؜_ Arabic letter mark

 115F: _ᅟ_ Hangul choseong filler
 1160: _ᅠ_ Hangul jungseong filler

 17B4: _឴_ Khmer vowel inherent aq
 17B5: _឵_ Khmer vowel inherent aa

 180E: _᠎_ Mongolian vowel separator

 200B: _​_ zero width space
 200C: _‌_ zero width non-joiner
 200D: _‍_ zero width joiner
 200E: _‎_ left-to-right mark
 200F: _‏_ right-to-left mark

 2028: _
_ line separator
 2029: _
_ paragraph separator

 202A: _‪_ left-to-right embedding
 202B: _‫_ right-to-left embedding
 202C: _‬_ pop directional formatting
 202D: _‭_ left-to-right override
 202E: _‮_ right-to-left override

 2060: _⁠_ word joiner
 2061: _⁡_ function application
 2062: _⁢_ invisible times
 2063: _⁣_ invisible separator
 2064: _⁤_ invisible plus
 2066: _⁦_ left-to-right isolate
 2067: _⁧_ right-to-left isolate
 2068: _⁨_ first strong isolate
 2069: _⁩_ pop directional isolate

 206A: __ inhibit symmetric swapping (deprecated)
 206B: __ activate symmetric swapping (deprecated)
 206C: __ inhibit arabic form shaping (deprecated)
 206D: __ activate arabic form shaping (deprecated)
 206E: __ national digit shapes (deprecated)
 206F: __ nominal digit shapes (deprecated)

 3164: _ㅤ_ Hangul filler

 FEFF: __ zero width no-break space

 FFA0: _ﾠ_ halfwidth Hangul filler

 FFF9: __ interlinear annotation anchor
 FFFA: __ interlinear annotation separator
 FFFB: __ interlinear annotation terminator

1D159: _𝅙_ musical symbol null notehead
1D173: _𝅳_ musical symbol begin beam
1D174: _𝅴_ musical symbol end beam
1D175: _𝅵_ musical symbol begin tie
1D176: _𝅶_ musical symbol end tie
1D177: _𝅷_ musical symbol begin slur
1D178: _𝅸_ musical symbol end slur
1D179: _𝅹_ musical symbol begin phrase
1D17A: _𝅺_ musical symbol end phrase

E0000: _󠀀_ unassigned
E0001: _󠀁_ language tag (deprecated)
E0002: _󠀂_ unassigned
... (E0002-E0019 unassigned)
E0019: _󠀙_ unassigned
E0020: _󠀠_
... (E0020-E007F formerly used for tagging texts by language)
E007F: _󠁿_

Almost-zero-width characters

• 2006: \_ \_ four-per-em space
• 2009: \_ \_ thin space
• 200A: \_ \_ hair space
• 202F: \_ \_ narrow no-break space

Contact me if you know of any other characters that should be listed here.

contact info

This test page is also available on the Web and on Gopher:

https://nervuri.net/zero-width

gopher://rawtext.club/0/~nervuri/zero-width.txt

The web version also contains links to programs which pass the test (more or less).