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fix(cli): trim blank streaming tails from live preview #3965

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Merged
wenshao merged 1 commit into from
May 8, 2026
Merged

fix(cli): trim blank streaming tails from live preview #3965

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7 changes: 6 additions & 1 deletion packages/cli/src/ui/utils/MarkdownDisplay.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -173,7 +173,12 @@ const MarkdownDisplayInternal: React.FC<MarkdownDisplayProps> = ({
if (!text) return <></>;

const renderVisualBlocks = renderMode === 'render';
const lines = text.split(/\r?\n/);
// Some models stream long runs of trailing newlines after useful content.
// Trim them from the live preview so blank rows do not push stable streaming
// text into scrollback on every repaint. The committed transcript still
// renders the full message via MarkdownDisplay with isPending=false.
const displayText = isPending ? text.trimEnd() : text;
const lines = displayText.split(/\r?\n/);
const headerRegex = /^ *(#{1,4}) +(.*)/;
const codeFenceRegex = /^ *(`{3,}|~{3,}) *([^`]*)$/;
const ulItemRegex = /^([ \t]*)([-*+]) +(.*)/;
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