Quoted lines get a bar of their own
Type the marker at the start of a line in a commit or reply, and the preview now draws an amber bar down its side. Consecutive lines share one bar, with your links, code and emoji intact.
Write a commit, put > at the start of a line, and hit preview. The marker disappears, the line slides in behind a 2-pixel amber rule with 12 pixels of breathing room, and the lines you quoted under it join into a single block. A plain line underneath closes it and goes back to normal width.
Credit goes to paulinevos, who gave the body renderer a quick pass before it draws anything. It walks the body a line at a time, drops the leading > plus at most one space, and packs consecutive quoted lines together. The pass never looks inside code, so a > inside backticks or a fenced block stays a >, and so does one in the middle of a sentence. Quotes show up in commit cards, replies, remotes and notification excerpts. In your own blue message bubble, the rule turns pale gray so it reads against the color.
One catch. Fenced code does not live inside a quote. Drop a fenced block between two quoted lines and the quote breaks in two, the code sitting outside the amber bar and the lines below starting a fresh one.