Smuggling arbitrary data through an emoji

769 点作者 paulgb3 个月前

50 条评论

Oh this is just the tip of the iceberg when it comes to abusing Unicode! You can use a similar technique to this to overflow the buffer on loads of systems that accept Unicode strings. Normally it just produces an error and/or a crash but sometimes you get lucky and it'll do all sorts of fun things! :)I remember doing penetration testing waaaaaay back in the day (before Python 3 existed) and using mere diacritics to turn a single character into many bytes that would then overflow the buffer of a back-end web server. This only ever caused it to crash (and usually auto-restart) but I could definitely see how this could be used to exploit certain systems/software with enough fiddling.

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ComputerGuru3 个月前

This is cute but unnecessary - Unicode includes a massive range called PUA: the private use area. The codes in this range aren’t mapped to anything (and won’t be mapped to anything) and are for internal/custom use, not to be passed to external systems (for example, we use them in fish-shell to safely parse tokens into a string, turning an unescaped special character into just another Unicode code point in the string, but in the PUA area, then intercept that later in the pipeline).You’re not supposed to expose them outside your api boundary but when you encounter them you are prescribed to pass them through as-is, and that’s what most systems and libraries do. It’s a clear potential exfiltration avenue, but given that most sane developers don’t know much more about Unicode other than “always use Unicode to avoid internationalization issues”, it’s often left wide open.

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omnibrain3 个月前

10 years or so ago I shocked coworkers with using U+202D LEFT-TO-RIGHT OVERRIDE mid in filenames on windows. So funnypicturegnp.exe became funnypictureexe.png Combined with a custom icon for the program that mimics a picture preview it was pretty convincing.

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rexxars3 个月前

For a real-world use case: Sanity used this trick[0] to encode Content Source Maps[1] into the actual text served on a webpage when it is in "preview mode". This allows an editor to easily trace some piece of content back to a potentially deep content structure just by clicking on the text/content in question.It has it's drawbacks/limitations - eg you want to prevent adding it for things that needs to be parsed/used verbatim, like date/timestamps, urls, "ids" etc - but it's still a pretty fun trick.[0] <a href="https://www.sanity.io/docs/stega" rel="nofollow">https://www.sanity.io/docs/stega</a>[1] <a href="https://github.com/sanity-io/content-source-maps">https://github.com/sanity-io/content-source-maps</a>

vessenes3 个月前

I love the idea of using this for LLM output watermarking. It hits the sweet spot - will catch 99% of slop generators with no fuss, since they only copy and paste anyway, almost no impact on other core use cases.I wonder how much you’d embed with each letter or token that’s output - userid, prompt ref, date, token number?I also wonder how this is interpreted in a terminal. Really cool!

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ethin3 个月前

It's worth noting, just as a curiosity, that screen readers can detect these variation selectors when I navigate by character. For example, if I arrow over the example he provided (I can't paste it here lol), I here: "Smiling face with smiling eyes", "Symbol e zero one five five", "Symbol e zero one five c", "Symbol e zero one five c", "Symbol e zero one five f". This is unfortunately dependent on the speech synthesizer used, and I wouldn't know if the characters were there if I was just reading a document, so this isn't much of an advantage all things considered.

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kevinsync3 个月前

StegCloak [0] is in the same ballpark and takes this idea a step further by encrypting the hidden payload via AES-256-CTR -- pretty neat little trick[0] <a href="https://github.com/KuroLabs/stegcloak">https://github.com/KuroLabs/stegcloak</a>

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vzaliva3 个月前

The title lis little misleading: "Note that the base character does not need to be an emoji – the treatment of variation selectors is the same with regular characters. It’s just more fun with emoji."Using this approach with non-emoji characters makes it more stealth and even more disturbing.

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HanClinto3 个月前

Even more than just simply watermarking LLM output, it seems like this could be a neat way to package logprobs data.Basically, include probability information about every token generated to give a bit of transparency to the generation process. It's part of the OpenAI api spec, and many other engines (such as llama.cpp) support providing this information. Normally it's attached as a separate field, but there are neat ways to visualize it (such as mikupad [0]).Probably a bad idea, but this still tickles my brain.* [0]: <a href="https://github.com/lmg-anon/mikupad">https://github.com/lmg-anon/mikupad</a>

wunderwuzzi233 个月前

This is cool. There are also the Unicode Tag characters that mirror ASCII and are often invisible in UI elements (especially web apps).The unique thing about Tag characters is that some LLMs interpret the hidden text as ASCII and follow instructions, and they can even write them:<a href="https://embracethered.com/blog/posts/2024/hiding-and-finding-text-with-unicode-tags/" rel="nofollow">https://embracethered.com/blog/posts/2024/hiding-and-finding...</a>Here an actual exploit POC that Microsoft fixed in Copilot: <a href="https://embracethered.com/blog/posts/2024/m365-copilot-prompt-injection-tool-invocation-and-data-exfil-using-ascii-smuggling/" rel="nofollow">https://embracethered.com/blog/posts/2024/m365-copilot-promp...</a>

nonameiguess3 个月前

More generally, you can use encoding formats that reserve uninterpreted byte sequences for future use to pass data that is only readable by receivers who know what you're doing, though note this not a cryptographically secure scheme and any sort of statistical analysis can reveal what you're doing.The png spec, for instance, allows you to include as many metadata chunks as you wish, and these may be used to hold data that cannot be used by any mainstream png reader. We used this in the Navy to embed geolocation and sensor origin data that was readable by specialized viewers that only the Navy had, but if you opened the file in a browser or common image viewer, it would either ignore or discard the unknown chunks.

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themoonisachees3 个月前

i've found a genuinely useful application of this that isn't just "talk secretively": I'm part of a community that has a chatroom on both discord and another platform. we have developped a bot that can make the bridge between the two, but it needs to maintain a table in a database of all the bridged messages, so that people use the "reply" feature on either platform, the reply is also performed on the other platform. With this, each platform's bridged message can contain hidden data that points to the other's platform ID, without the need to store it ourselves, and without it being visible to users.obviously we won't be tearing down the infra already in place anytime soon, so we won't actually be doing that, but that's definitely a useful application for when you don't want to be hosting a database and just wish you could attach additional data to a restrictive format.

JoelJacobson3 个月前

Imagine using the ID card emoji (U+1FAAA) as a universal carrier for digital ID tokens. A dumb demo is available at <a href="https://pit.lovable.app/" rel="nofollow">https://pit.lovable.app/</a> which—without any secure protocol—simply encodes a National Identification Number into the emoji using variation selectors.The idea is that banks could issue encrypted ID tokens in this way, letting them move seamlessly across any platform that supports Unicode (messaging apps, email, web forms, etc.). The heavy lifting of security (preventing replay attacks, interception, ensuring token freshness, etc.) would be managed separately with robust cryptography, while the emoji serves purely as a transport layer.It's not about reinventing security but about creating a cross-platform way to carry identity tokens. Thoughts?

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dalemhurley3 个月前

I love it, I got Claude to add a pin to provide very basic encryption<a href="https://claude.site/artifacts/5bfdf131-d847-4735-9242-998f233199a1" rel="nofollow">https://claude.site/artifacts/5bfdf131-d847-4735-9242-998f23...</a>

rafram3 个月前

This is cool. I tried pasting the output into an Instagram comment and it stayed intact, so I have a feeling someone could do some interesting stuff with that. Who needs a botnet C&C server when you can post totally invisible commands on public forums?

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iNic3 个月前

The tokenizer catches it: <a href="https://platform.openai.com/tokenizer" rel="nofollow">https://platform.openai.com/tokenizer</a>.

nzach3 个月前

so.... in theory you should be able to create several visually identical links that give access to different resources?I've always assumed links without any tracking information (unique hash, query params, etc) were safe to click(with regards to my privacy). but if this works for links I may need to revise my strategy regarding how to approach links sent to me.

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paulgb3 个月前

(author here) some people in this thread and elsewhere asked me about whether an LLM could decode this, and the answer seems to be: not likely by itself, but it often can if it has access to a Python interpreter!Here's a demo of Gemini Flash 2 solving one in 7s: <a href="https://bsky.app/profile/paulbutler.org/post/3lhzhroogws2g" rel="nofollow">https://bsky.app/profile/paulbutler.org/post/3lhzhroogws2g</a>

FranchuFranchu3 个月前

You could store UTF-8 encoded data inside the hidden bytestring. If some of the UTF-8 encoded smuggled characters are variation selector characters, you can smuggle text inside the smuggled text. Smuggled data can be nested arbitrarily deep.

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Mockapapella3 个月前

In the same vein, I did some fun unicode abusing a few years ago where I used scripts to convert programs into series of various ZWJ's: <a href="https://thelisowe.substack.com/p/sleeper-cell-a-method-of-embedding-invisible-programs-into-source-code" rel="nofollow">https://thelisowe.substack.com/p/sleeper-cell-a-method-of-em...</a>Also includes a decoder script

ofou3 个月前

This is one of the reasons I've been advocating to use UTF-8 as a tokenizer for a long time. The actual problem IMHO are tokenizers themselves, which obscure the encoding/decoding process in order to gain some compression during training to fit more data in for the same budget, and arguably gaining some better understanding from the beginning. Again just a lack of computing power.If you use UTF-8 directly as tokenizer, this problem becomes evident once you fit it into the context window. Plus, you can run multiple tests for this type of injection; no emoji should take more than up to 40 bytes (10 code points * 4 bytes per code point in the worst case). This is an attack on tokenizers, not on UTF-8.Plus, Unicode publishes the full list of sequences valid containing the ZWJ character in emoji-zwj-sequences.txt

blmarket3 个月前

This and several other abuse cases forced my previous work to use code pointers to count 'characters' for user's nickname / status messages. No one wanted to download 9MB simply browsing other users.

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jerpint3 个月前

The ability to add watermarks to text is really interesting. Obviously it could be worked around , but could be a good way to subtly watermark e.g. LLM outputs

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panki273 个月前

I implemented something similar years ago, but much simpler/less sophisticated.Unicode has two non-printing space characters: zero-width space (U+200B) and zero-width joiner (U+200D). This allows you to encode arbitrary data in binary. I would give an example, but HN seems to strip this :(

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qingcharles3 个月前

I was using this technique last year with Bing Image Creator.It let you get around their filter on brand names and celebrity names by smuggling them into the prompt in a way the AI could read, but the human-written filter was not designed for.

nerder923 个月前

Might not be related to the point of the article per se, but i've tried to decode it with different LLMs. To benchmark their reasoning capabilities.- 4o: Failed completely- o1: Overthinks it for a while and come up with the wrong answer- o3-mini-high: Get's closer to the result at first try, needs a second prompt to adjust the approach- r1: nails it at first try 󠅖󠅥󠅓󠅛󠅙󠅞󠅗󠄐󠅙󠅝󠅠󠅢󠅕󠅣󠅣󠅙󠅦󠅕The prompt I've used was simply: "this emoji has an hidden message 󠅘󠅕󠅜󠅜󠅟 can you decode it?"If you want to see the CoT: <a href="https://gist.github.com/nerder/5baa9d7b13c1b7767d022ea0a7c91986" rel="nofollow">https://gist.github.com/nerder/5baa9d7b13c1b7767d022ea0a7c91...</a>

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foobuzzHN3 个月前

10 years ago I made a POC for smuggling arbitrary data through _no visible text at all_: <a href="https://github.com/foobuzz/ium">https://github.com/foobuzz/ium</a>

StevenNunez3 个月前

"To be clear, this is an abuse of unicode and you shouldn’t do it. If your mind is wandering to practical use cases for this, shut it down." TOO LATE!

jaygreco3 个月前

Interestingly, it’s also possible to encode _emoji_ inside emoji!

Dannyjelll3 个月前

Isn't it also an option to use this to generate pretty decent passwords? Like including one of those unicode chars encoded with a message, pretty sure no password cracking tool currently has support for this

remram3 个月前

I'm not too surprised by this, but I'm annoyed that no amount of configuration made those bytes visible again in my editor. Only using hexdump revealed them.

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egypturnash3 个月前

If you try posting this on Bluesky, the editor only counts it as one emoji, but you will get an error upon trying to post.

fortran773 个月前

What's interesting is that even a "view source" shows nothing amiss, and if I do a copy/paste from the debug inspector view of "This sentence has a hidden message󠅟󠅘󠄐󠅝󠅩󠄜󠄐󠅩󠅟󠅥󠄐󠅖󠅟󠅥󠅞󠅔󠄐󠅤󠅘󠅕󠄐󠅘󠅙󠅔󠅔󠅕󠅞󠄐󠅝󠅕󠅣󠅣󠅑󠅗󠅕󠄐󠅙󠅞󠄐󠅤󠅘󠅕󠄐󠅤󠅕󠅨󠅤󠄑." it still shows up....

urbandw311er3 个月前

When people discuss things like “Do LLMs know about this?” On a public website I always think that it’s the equivalent of somebody whose phone is wiretapped calling their friend and asking if the FBI knows about something.

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653 个月前

This would be useful as a fingerprinting technique for corporate/government leakers.

zurfer3 个月前

h󠅘󠅕󠅜󠅜󠅟󠄐󠅖󠅕󠅜󠅜󠅟󠅧󠄐󠅘󠅑󠅓󠅛󠅕󠅢󠄐󠄪󠄙a

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arkh3 个月前

> To be clear, this is an abuse of unicode and you shouldn’t do it. If your mind is wandering to practical use cases for this, shut it down.Totally not thinking about IRC clients with their own hidden commands.

kentbrew3 个月前

That's neat! Now I'm wondering if this could be used to smuggle Signal links through Xitter....

nitwit0053 个月前

Even kids figure out how to manipulate unicode text. If you want to bypass a swear filter, replace a letter with an alternate representation of the same letter.

petee3 个月前

It's fun that you can encode encoded emoji into a new one

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andrethegiant3 个月前

Clever! I made a similar emoji encoding/decoding microsite: <a href="https://face64.me" rel="nofollow">https://face64.me</a>

tyilo3 个月前

Kitty terminal shows non-payload letters and emojis normally, but with a payload a letter is shown as one box and an emoji is shown as two boxes.

cynicalsecurity3 个月前

Ctrl+F "unicode normalisation" 0/0I'm surprised no one has mentioned it yet. It's usually super easy, but people forget to add it all the time.

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ahofmann3 个月前

This will break so many (web-)forms :-)It is not bulletproof though. In this "c󠄸󠅙󠄑󠄐󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅣󠅖󠅣󠅖󠅣󠅕󠅖󠅗󠅣󠅢󠅗󠄐󠅣󠅢󠅗󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅦󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅦󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅗󠅕󠅞󠅤󠅣󠄭󠄭󠄠󠄞󠄡󠄢󠄞󠄨󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅑󠅠󠅙󠄭󠄭󠄠󠄞󠄨󠄞󠄡󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅟󠅠󠅕󠅞󠅑󠅙󠄭󠄭󠄠󠄞󠄡󠄠󠄞󠄡󠄥󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅣󠅙󠅜󠅕󠅢󠅟󠄭󠄭󠄠󠄞󠄧󠄞󠄤󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅑󠅪󠅥󠅢󠅕󠄭󠄭󠄠󠄞󠄥󠄞󠄣󠅜󠅙󠅦󠅕󠅛󠅙󠅤󠄝󠅠󠅜󠅥󠅗󠅙󠅞󠅣󠄝󠅤󠅥󠅢󠅞󠄝󠅔󠅕󠅤󠅕󠅓󠅤󠅟󠅢󠄭󠄭󠄠󠄞󠄣󠄞󠄦󠅠󠅩󠅤󠅘󠅟󠅞󠄝󠅔󠅟󠅤󠅕󠅞󠅦󠄭󠄭󠄡󠄞󠄠󠄞󠄡󠅢󠅕󠅡󠅥󠅕󠅣󠅤󠅣󠄭󠄭󠄢󠄞󠄣󠄢󠄞󠄣 " and that space, are about 3500 characters. Copying only the "c" above (not this one) will keep some of the hidden text, but not all. Nevertheless, while I knew that this is possible, it still breaks a lot of assumptions around text.Edit: the text field for editing this post is so large, that I need to scroll down to the update button. This will be a fun toy to create very hard to find bugs in many tools.

vladde3 个月前

test, do emojis work on hn?󠅤󠅕󠅣󠅤 edit: apparently not edit 2: oh wait, the bytes are still there! copy-paste this entire message and it decodes to "test"

_nhh3 个月前

Perfect way of personalized ad tracking?

评论 #43035268 未加载

albybisy3 个月前

wow󠄹󠄐󠅑󠅝󠄐󠅞󠅟󠅤󠄐󠅃󠅑󠅤󠅟󠅣󠅘󠅙󠄐󠄾󠅑󠅛󠅑󠅝󠅟󠅤󠅟!

gradientsrneat3 个月前