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      <div class="chatlog__message-aside"><img class="chatlog__avatar" src="https://cdn.discordapp.com/avatars/189711109966659584/95280765d1be73ce985dce15ea3585f6.png?size=512" alt="Avatar" loading="lazy"></div>
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        <div class="chatlog__header"><span class="chatlog__author" style="color:rgb(237,171,161)" title="omochimetaru" data-user-id="189711109966659584">omochimetaru</span> <a href="/channels/430242233468452865?category=main&amp;channel=swiftbot-sandbox&amp;message_id=540347985318510593"><span class="chatlog__timestamp" title="Thursday, January 31, 2019 1:48 AM"></span></a><a href="#chatlog__message-container-540347703595368448">1/31/2019 1:48 AM</a></div>
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">string.unicodeScalars[index] の場合はunicode scalar</span></div>
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        <div class="chatlog__short-timestamp" title="Thursday, January 31, 2019 1:48 AM">1:48 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">string[index]の場合はcharacter</span></div>
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      <div class="chatlog__message-aside">
        <div class="chatlog__short-timestamp" title="Thursday, January 31, 2019 1:49 AM">1:49 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">string.utf8[index]はバイト位置（あ、この場合は不正なところになりえる string.utf16[index]は2バイト境界</span></div>
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  <div id="chatlog__message-container-540347985318510593" class="chatlog__message-container" data-message-id="540347985318510593">
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        <div class="chatlog__short-timestamp" title="Thursday, January 31, 2019 1:49 AM">1:49 AM</div>
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      <div class="chatlog__message-primary">
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">ただ直近のCharacterまで巻き戻すのがまあまあ重そう</span></div>
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