GitHub links are posted in chat quite frequently, but the support of the appearance is somewhat poor:
<html><head><link rel="stylesheet" href="http://cdn-chat.sstatic.net/chat/css/chat.stackoverflow.com.css"></head><body><div id="transcript"><div class="monologue user-2246344"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/Y22En.png?s=128&g=1&g&s=16" alt="Sam"></div><div class="username"><a href="https://chat.stackoverflow.com/users/2246344/sam" title="Sam">Sam</a></div></div></div><div class="messages"><div class="message" id="message-19853529"><a name="19853529" href="https://chat.stackoverflow.com/transcript/5?m=19853529#19853529"><span style="display:inline-block;" class="action-link edits"><span class="img menu"> </span></span></a><div class="content">Yeah, well apparently that's the only way to get the url :/</div><span class="flash"></span></div></div><div class="clear-both" style="height:0"> </div></div><div class="monologue user-3622940 mine"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/w2od0.jpg?s=128&g=1&g&s=16" alt="Unihedron"></div><div class="username"><a href="https://chat.stackoverflow.com/users/3622940/unihedron" title="Unihedron">Unihedron</a></div></div></div><div class="messages"><div class="message highlight" id="message-19853530"><a name="19853530" href="https://chat.stackoverflow.com/transcript/5?m=19853530#19853530"><span style="display:inline-block;" class="action-link"><span class="img menu"> </span></span></a><div class="content"><a href="https://github.com/Vincentyification/JavaBot/issues/7" rel="nofollow"><code>https://github.com/Vincentyification/JavaBot/issues/7</code></a></div><span class="flash"></span></div></div><div class="clear-both" style="height:0"> </div></div><div class="monologue user-2246344"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/Y22En.png?s=128&g=1&g&s=16" alt="Sam"></div><div class="username"><a href="https://chat.stackoverflow.com/users/2246344/sam" title="Sam">Sam</a></div></div></div><div class="messages"><div class="message" id="message-19853532"><a name="19853532" href="https://chat.stackoverflow.com/transcript/5?m=19853532#19853532"><span style="display:inline-block;" class="action-link"><span class="img menu"> </span></span></a><div class="content">Shame github doesn't onebox.</div></div></div><div class="clear-both" style="height:0"> </div></div></div></body></html>
I suppose it would be prettier to one-box these issues, repositories and wiki posts etc into a one-boxed item, perhaps like this (hand-written CSS for prosperity):
.ob-github {
padding: .8em 1.5em;
background-color: White;
color: #444444;
}
.ob-github-ticket img {
height: 32px;
width: 32px;
float: left;
margin-right: 4px;
}
.ob-github-ticket .title {
margin-bottom: .5em;
font-weight: 600;
}
.ob-github-ticket .title .title {
margin-bottom: .5em;
line-height: 1.1;
}
.ob-github-ticket .title .id,
.ob-github-ticket-meta .comments {
margin-bottom: .5em;
color: #aaa;
}
.ob-github-ticket-meta {
color: #666666;
}
.ob-github-ticket-meta .author {
font-weight: bold;
}
.ob-github-ticket-meta time {
width: 87%;
}
.ob-github-ticket-meta p {
font-weight: lighter;
}
<html><head><link rel="stylesheet" href="http://cdn-chat.sstatic.net/chat/css/chat.stackoverflow.com.css"></head><body><div id="transcript"><div class="monologue user-2246344"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/Y22En.png?s=128&g=1&g&s=16" alt="Sam"></div><div class="username"><a href="https://chat.stackoverflow.com/users/2246344/sam" title="Sam">Sam</a></div></div></div><div class="messages"><div class="message" id="message-19853529"><a name="19853529" href="https://chat.stackoverflow.com/transcript/5?m=19853529#19853529"><span style="display:inline-block;" class="action-link edits"><span class="img menu"> </span></span></a><div class="content">Yeah, well apparently that's the only way to get the url :/</div><span class="flash"></span></div></div><div class="clear-both" style="height:0"> </div></div><div class="monologue user-3622940 mine"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/w2od0.jpg?s=128&g=1&g&s=16" alt="Unihedron"></div><div class="username"><a href="https://chat.stackoverflow.com/users/3622940/unihedron" title="Unihedron">Unihedron</a></div></div></div><div class="messages"><div class="message highlight" id="message-19853530"><a name="19853530" href="https://chat.stackoverflow.com/transcript/5?m=19853530#19853530"><span style="display:inline-block;" class="action-link"><span class="img menu"></span></span></a><div class="content"><div class="ob-github ob-github-ticket"><img title="Vogel612" src="https://avatars0.githubusercontent.com/u/7288995" /><a href="https://github.com/Vincentyification/JavaBot/issues/7" class="title"><span class="title">Sending messages with the mechanize approach fails</span> <span class="id">#7</span></a><div class="ob-github-ticket-meta"><span class="author">Vogel612</span> opened this issue <time datetime="2014-11-07T16:12:03Z" is="relative-time" title="Nov 8, 2014, 12:12 AM GMT+8">22 hours ago</time><p>Mechanize doesn't let us send messages yet. It seems that the Login to chat isn't succesfully mimicked yet, as the response is: "you must login to send messages"</p><p>A login to the SE-OpenId has been confirmed by checking the result page after login for the class "profile-me", that's given to<span>…</span> <span class="comments">9 comments</span></p></div></div></div><span class="flash"></span></div></div><div class="clear-both" style="height:0"> </div></div><div class="monologue user-2246344"><div class="signature"><div class="tiny-signature"><div class="avatar avatar-16"><img width="16" height="16" src="https://i.stack.imgur.com/Y22En.png?s=128&g=1&g&s=16" alt="Sam"></div><div class="username"><a href="https://chat.stackoverflow.com/users/2246344/sam" title="Sam">Sam</a></div></div></div><div class="messages"><div class="message" id="message-19853532"><a name="19853532" href="https://chat.stackoverflow.com/transcript/5?m=19853532#19853532"><span style="display:inline-block;" class="action-link"><span class="img menu"> </span></span></a><div class="content">Shame github doesn't onebox.</div></div></div><div class="clear-both" style="height:0"> </div></div></div></body></html>