global search does not find emoji in messages

[Raiden-GH]

The global search in DC-iOS only recognizes emojis in the name of the chats but not in the chats themselves. Since this is not the case in DC-Android and DC-Desktop, it is probably not a core bug.

iOS 18.2
DC-iOS 1.50.3

[r10s]

i could reproduce that, i created a chat, a contact and a message each containing the emoji 😇:

doing a global search for 😇 finds it in chat name and contact name - but not in the message. moreover, the highlighting breaks the display:

doing a in-chat-search for the message, however is fine - the message is found (2 hits here) and also the highlighting is fine (see the background color around 😇 in the last message):

[Amzd]

This has to do with how the string is encoded. I tried a couple options in .cString(using:)

• .iso2022JP works but idk the side effects
• .symbol works for an emoji but not for text

Jsonrpc call works so maybe easiest to just convert to that. Have to figure out if we still need DcChatlist.

[r10s]

hm, but strings are all returned from core the same way. also, strings are given to core the same way. so, why is the hiliting in the in-chat-search working? (the hilighting is done in UI, not in core, afaik)

jsonrpc for basic low-level objects as needed by Andoid/iOS is missing and/or badly documented and is out of scope until we have fitting APIs. the current ones are optimised for Desktop and have eg. lots of for Android/iOS probably unneeded database calls, so would slow down things. things are improving there, however, nothing for now

[Amzd]

I don't know how core works nor can I fully comprehend rust but it says lossy conversion to string here: https://github.com/deltachat/deltachat-core-rust/blob/4ec50d19907f9b64bf144d37a004dcc62fc3ed07/deltachat-ffi/src/lib.rs#L915

And when I do "❤️".cString(using: .lossy) in Swift I get nil, so maybe it's something to do with that?