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Playlists: Fix 'invalid byte sequence' error when subscribing (#4887)

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In Crystal, handling multi-byte sequences in UTF-8 requires understanding that
slicing by bytes can lead to invalid sequences if the slicing isn't aligned
with character boundaries. In this case, attempting to slice a string by bytes
can cut through multi-byte UTF-8 sequences, leading to invalid sequences.

To avoid this, strings should be sliced based on characters rather than bytes.

Fixes issue 4886
This commit is contained in:
Samantaz Fox 2024-10-08 18:01:22 +02:00
commit 97895a491a
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src/invidious/playlists.cr
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@ -270,7 +270,7 @@ end
def subscribe_playlist(user, playlist) def subscribe_playlist(user, playlist)
playlist = InvidiousPlaylist.new({ playlist = InvidiousPlaylist.new({
title: playlist.title.byte_slice(0, 150), title: playlist.title[..150],
id: playlist.id, id: playlist.id,
author: user.email, author: user.email,
description: "", # Max 5000 characters description: "", # Max 5000 characters