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fix: prevent layout shifts in code blocks during streaming #216

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Merged
AnthonyRonning merged 1 commit into from
Aug 26, 2025
Merged

fix: prevent layout shifts in code blocks during streaming #216

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18 changes: 13 additions & 5 deletions frontend/src/chat.css
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Original file line number Diff line number Diff line change
Expand Up @@ -774,24 +774,30 @@
.markdown-body .highlight pre,
.markdown-body pre {
padding: 16px 16px 8px 16px;
overflow: auto;
overflow-x: auto;
overflow-y: hidden;
font-size: 85%;
line-height: 1.45;
border-radius: 6px;
direction: ltr;
width: 100%;
min-width: 100%;
box-sizing: border-box;
}

.markdown-body pre code,
.markdown-body pre tt {
display: inline-block;
max-width: 100%;
display: block;
padding: 0;
margin: 0;
overflow-x: scroll;
overflow-x: visible;
line-height: inherit;
word-wrap: normal;
background-color: transparent;
border: 0;
white-space: pre;
width: max-content;
min-width: 100%;
}

.markdown-body .csv-data td,
Expand Down Expand Up @@ -1076,8 +1082,9 @@

.markdown-body pre code {
display: block;
overflow-x: auto;
overflow-x: visible;
padding: 1em;
box-sizing: border-box;
}

.markdown-body code {
Expand All @@ -1087,6 +1094,7 @@
.markdown-body .hljs,
.markdown-body pre {
@apply text-foreground bg-muted;
transition: none;
}

/* Theme: Tokyo-night-Dark
Expand Down
11 changes: 7 additions & 4 deletions frontend/src/components/markdown.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -223,7 +223,7 @@ export function PreCode(props: JSX.IntrinsicElements["pre"]) {
}, []);

return (
<>
<div className="w-full">
<div className="flex justify-end pt-2 mb-1">
<Button
variant="ghost"
Expand Down Expand Up @@ -252,8 +252,10 @@ export function PreCode(props: JSX.IntrinsicElements["pre"]) {
)}
</Button>
</div>
<pre ref={ref}>{props.children}</pre>
</>
<pre ref={ref} className="w-full overflow-x-auto">
{props.children}
</pre>
</div>
);
}

Expand Down Expand Up @@ -655,7 +657,8 @@ export function Markdown(
className="markdown-body"
style={{
fontSize: `${props.fontSize ?? 16}px`,
fontFamily: props.fontFamily || "inherit"
fontFamily: props.fontFamily || "inherit",
wordBreak: "break-word"
}}
ref={mdRef}
onContextMenu={props.onContextMenu}
Expand Down
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