Method handlePaste

packages/pi-tui/src/components/editor.ts:1250–1316

(pastedText: string)

	}

	private handlePaste(pastedText: string): void {
		this.cancelAutocomplete();
		this.exitHistoryBrowsing();
		this.lastAction = null;

		this.pushUndoSnapshot();

		// Some terminals (e.g. tmux popups with extended-keys-format=csi-u) re-encode
		// control bytes inside bracketed paste as CSI-u Ctrl+<letter> sequences
		// (ESC [ <codepoint> ; 5 u). Decode those back to their literal byte so the
		// per-char filter below preserves newlines instead of stripping ESC and
		// leaking the printable tail (e.g. "[106;5u") into the editor.
		const decodedText = pastedText.replace(/\x1b\[(\d+);5u/g, (match, code) => {
			const cp = Number(code);
			if (cp >= 97 && cp <= 122) return String.fromCharCode(cp - 96);
			if (cp >= 65 && cp <= 90) return String.fromCharCode(cp - 64);
			return match;
		});

		// Clean the pasted text: normalize line endings, expand tabs
		const cleanText = this.normalizeText(decodedText);

		// Filter out non-printable characters except newlines
		let filteredText = cleanText
			.split("")
			.filter((char) => char === "\n" || char.charCodeAt(0) >= 32)
			.join("");

		// If pasting a file path (starts with /, ~, or .) and the character before
		// the cursor is a word character, prepend a space for better readability
		if (/^[/~.]/.test(filteredText)) {
			const currentLine = this.state.lines[this.state.cursorLine] || "";
			const charBeforeCursor = this.state.cursorCol > 0 ? currentLine[this.state.cursorCol - 1] : "";
			if (charBeforeCursor && /\w/.test(charBeforeCursor)) {
				filteredText = ` ${filteredText}`;
			}
		}

		// Split into lines to check for large paste
		const pastedLines = filteredText.split("\n");

		// Check if this is a large paste (> 10 lines or > 1000 characters)
		const totalChars = filteredText.length;
		if (pastedLines.length > 10 || totalChars > 1000) {
			// Store the paste and insert a marker
			this.pasteCounter++;
			const pasteId = this.pasteCounter;
			this.pastes.set(pasteId, filteredText);

			// Insert marker like "[paste #1 +123 lines]" or "[paste #1 1234 chars]"
			const marker =
				pastedLines.length > 10
					? `[paste #${pasteId} +${pastedLines.length} lines]`
					: `[paste #${pasteId} ${totalChars} chars]`;
			this.insertTextAtCursorInternal(marker);
			return;
		}