列表清洁背景

列表清洁背景

我正在使用该listings包在文档中显示代码。现在我注意到背景中有线条。

有人知道如何删除它们吗?

配置:

\lstset{
   basicstyle=\scriptsize\ttfamily,
   keywordstyle=\bfseries\ttfamily\color{orange},
   commentstyle=\color{gray}\ttfamily,
   emph={square}, 
   emphstyle=\color{blue}\texttt,
   emph={[2]root,base},
   emphstyle={[2]\color{yac}\texttt},
   showstringspaces=false,
   flexiblecolumns=false,
   tabsize=2,
   numbers=left,
   numberstyle=\tiny,
   numberblanklines=false,
   stepnumber=1,
   numbersep=10pt,
   xleftmargin=15pt,
   language=bash,
   backgroundcolor=\color{lightgray},
   frame=L
 }

样本: 示例图片

最低限度的工作:

\documentclass[11pt]{article}
\usepackage{xcolor}
\usepackage{listings}

\lstset{
   basicstyle=\scriptsize\ttfamily,
   keywordstyle=\bfseries\ttfamily\color{orange},
   commentstyle=\color{gray}\ttfamily,
   emph={square}, 
   emphstyle=\color{blue}\texttt,
   emph={[2]root,base},
   emphstyle={[2]\color{yac}\texttt},
   showstringspaces=false,
   flexiblecolumns=false,
   tabsize=2,
   numbers=left,
   numberstyle=\tiny,
   numberblanklines=false,
   stepnumber=1,
   numbersep=10pt,
   xleftmargin=15pt,
   language=bash,
   backgroundcolor=\color{lightgray},
   frame=L
 }

\begin{document}

\begin{lstlisting}[language={}]
interface=wlan0
driver=nl80211
bssid=02:ab:cd:ef:12:30
country_code=DE
ieee80211d=1

ssid=INR-IoTs
channel=6
hw_mode=g

wpa=2
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP
wpa_passphrase=xxxxxxxx

bss=wlan0_0
ssid=INR-IoT
\end{lstlisting} 

\end{document}

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