Hi, I’m not understanding the behaviour when including unicode inside a string which is then string concatenated. The resulting string is not known when streamed into a file. Here’s something that works: "❔ foobar" -> "❔ foobar" This works "\u2754 foobar" -> "❔ foobar" This doesn’t work: "❔"…

[image] shotleybuilder: “:white_question_mark:” <> “foobar” works for me: Erlang/OTP 22 [erts-10.7] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1] [hipe] Interactive Elixir (1.10.3) - press Ctrl+C to exit (type h() ENTER for help) iex(1)> "❔" <> "foobar" "❔foobar"

Well, my terminal doesn’t support emojis :frowning: but if I run iex(1)> IO.inspect(“\u274c”) "â Or more simply iex(1)> “\u274c” "â No closing double quote …

[image] shotleybuilder: Well, my terminal doesn’t support emojis Is your terminal not in UTF8 mode?

+U274c is represented by these 3 bytes in utf8: 0xE2 0x9D 0x8C. If your terminal doesn’t support utf8, then you should probably inspect on a byte level rather than printed representation. As you have not specified your terminals encoding, basically everything can be triggered by these bytes. Assu…

You gave me fresh motivation to fix this. The fix to render of emoji in the VS Code terminal was a new Win10 feature called “Beta: Use Unicode UTF-8 for worldwide language support”. iex.bat still freezes in Powershell (no iex prompt), and it makes no difference to the command prompt. The fix work…

Okay, it appears the problem occurs ‘just’ with the 5 character emojis (just happened to be the one I was using) iex(16)> “\u274c” <> " foobar" “:cross_mark: foobar” iex(17)> “\u1f517” <> " foobar" “ὑ7 foobar” iex(18)> “\u2754” <> " foobar" “:white_question_mark: foobar” iex(19)> “\u1F49A” <>…

iex(1)> "\u274c" <> " foobar" "❌ foobar" iex(2)> "\u1f517" <> " foobar" "ὑ7 foobar" iex(3)> "\u2754" <> " foobar" "❔ foobar" iex(4)> "\u1F49A" <> " foobar" "ὉA foobar" This is how it looks for…

I think I need to use surrogate pairs. The link emoji :link: is D83D + DD17. Not sure of the syntax in Elixir. Surrogate Pair Calculator etc.

iex> << 0x1F517 :: utf8 >> "🔗" iex> << 0xF0, 0x9F, 0x94, 0x97 >> "🔗" iex> << 0xF0, 0x9F, 0x94, 0x97>> == << 0x1f517 :: utf8 >> true d8 3d dd 17 is the UTF16 representation. Elixir is a UTF8 language where the encoding is f0 9f 94 97.

Kip, many thanks. Just a quick question. How do you find << 0xF0, 0x9F, 0x94, 0x97 >>? << 0x1F49A :: utf8 >> works just fine though as does using the emoji picker in Windows to paste the emoji into the VS Code editor (which was the approach I was taking). The usual mess of conflicting results led…