如何停止在字符串变量空间中循环添加换行符的批处理脚本？

Question

echo off
setlocal enableDelayedExpansion

set /p "short_description=description:"
if not defined short_description set "short_description={short_description}"
set /p "entry_point=entry point: (index.js)"
if not defined entry_point set "entry_point=index.js"

`for %%I in (
    "{"
    "  "description": "%short_description%","
    "  "main": "%entry_point%","
    "}"
) do (
if %%I=="." (
        echo.>> "package.json"
    ) else (
        echo %%~I>> "package.json"
    )
)

当提示变量文本中有空格时，输出最终在变量字符串的每个空格字符中都有换行符。

举个例子： 这是我的测试响应提示：

description:description with spaces in the text
entry point: (index.js)index.html

这是输出

{
  "description": "description
with
spaces
in
the
text","
  "main": "index.html",
}

它应该是这样的：

{
  "description": "description with spaces in the text",
  "main": "index.html",
}