Function flushBuffer

src/ink/output.ts:708–742

(
  buffer: string,
  styles: AnsiCode[],
  stylePool: StylePool,
  out: ClusteredChar[],
)

}

function flushBuffer(
  buffer: string,
  styles: AnsiCode[],
  stylePool: StylePool,
  out: ClusteredChar[],
): void {
  // Compute styleId + hyperlink ONCE for the whole style run.
  // Every grapheme in this buffer shares the same styles.
  //
  // Extract and track hyperlinks separately, filter from styles.
  // Always check for OSC 8 codes to filter, not just when a URL is
  // extracted. The tokenizer treats OSC 8 close codes (empty URL) as
  // active styles, so they must be filtered even when no hyperlink
  // URL is present.
  const hyperlink = extractHyperlinkFromStyles(styles) ?? undefined
  const hasOsc8Styles =
    hyperlink !== undefined ||
    styles.some(
      s =>
        s.code.length >= OSC8_PREFIX.length && s.code.startsWith(OSC8_PREFIX),
    )
  const filteredStyles = hasOsc8Styles
    ? filterOutHyperlinkStyles(styles)
    : styles
  const styleId = stylePool.intern(filteredStyles)

  for (const { segment: grapheme } of getGraphemeSegmenter().segment(buffer)) {
    out.push({
      value: grapheme,
      width: stringWidth(grapheme),
      styleId,
      hyperlink,
    })
  }
}

/**
 * Write a single line's characters into the screen buffer.