From 80a0ea3eb1c4da463c1363735cbacf8852fff0e1 Mon Sep 17 00:00:00 2001
From: Meisoftcoltd <38667978+Meisoftcoltd@users.noreply.github.com>
Date: Fri, 22 May 2026 19:29:05 +0000
Subject: [PATCH] fix: handle double-wrapped list in AutoLoopCalculatorTTSBatch

ComfyUI's `INPUT_IS_LIST = True` behavior wraps incoming data in a list. When an upstream node (like `BatchTextFileReader`) already returns a list, ComfyUI wraps it again, creating a list of lists (e.g., `[["file1", "file2"]]`).

This patch updates `AutoLoopCalculatorTTSBatch.calculate` to robustly detect and unpack this double-wrapping before extracting the target texts, preventing a downstream `AttributeError` during string manipulation.
---
 loop.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/loop.py b/loop.py
index 5edea56..8430c3c 100644
--- a/loop.py
+++ b/loop.py
@@ -133,7 +133,14 @@ class AutoLoopCalculatorTTSBatch:
 
         loop.global_step_by_chunk = True
 
-        texts = text_list if isinstance(text_list, list) else [text_list]
+        # 💡 FIX: Desempaquetar la doble lista generada por INPUT_IS_LIST = True
+        if isinstance(text_list, list) and len(text_list) > 0 and isinstance(text_list[0], list):
+            texts = text_list[0]
+        elif isinstance(text_list, list):
+            texts = text_list
+        else:
+            texts = [text_list]
+
         mode = split_mode[0] if isinstance(split_mode, list) else split_mode
         idx = current_loop_index[0] if isinstance(current_loop_index, list) else current_loop_index