Recent issues with lstlinebgrd package with listings after the latter's update[September 02,2018]

Question

I could run the program without any problem while highlighting few lines of code using listings and lstlinebgrd packages. But the recent update of listings package v1.7 is giving me error even on the earlier working programs. For example, this program here. I am giving a similar program, but this time, in beamer.

\documentclass{beamer}

\usepackage{xcolor,listings, lstlinebgrd}

%   \makeatletter
%   \let\old@lstKV@SwitchCases\lstKV@SwitchCases
%   \def\lstKV@SwitchCases#1#2#3{}
%   \makeatother
%   \usepackage{lstlinebgrd}
%   \makeatletter
%   \let\lstKV@SwitchCases\old@lstKV@SwitchCases
%   
%   \lst@Key{numbers}{none}{%
%       \def\lst@PlaceNumber{\lst@linebgrd}%
%       \lstKV@SwitchCases{#1}%
%       {none:\\%
%        left:\def\lst@PlaceNumber{\llap{\normalfont
%                   \lst@numberstyle{\thelstnumber}\kern\lst@numbersep}\lst@linebgrd}\\%
%        right:\def\lst@PlaceNumber{\rlap{\normalfont
%                   \kern\linewidth \kern\lst@numbersep
%                   \lst@numberstyle{\thelstnumber}}\lst@linebgrd}%
%       }{\PackageError{Listings}{Numbers #1 unknown}\@ehc}}
%   \makeatother

\begin{document}

\begin{frame}[fragile]{Problem}
Test programme:
\begin{lstlisting}[language=C, gobble=6, linebackgroundcolor={%
    \btLstHL<1>{1,3,5-6}%
    \btLstHL<2>{4}%
}]
    #include <stdio.h>

    int main(void) {%
    printf("Hello World!");  
        return 0;
    }
\end{lstlisting}
\end{frame}
\end{document}

Both give same error as

! Package Listings Error: Numbers none unknown.

See the Listings package documentation for explanation.
Type  H <return>  for immediate help.
...                                              

l.36 ...Error{Listings}{Numbers #1 unknown}\@ehc}}

Is there any work around? May be the lstlinebgrd package author can give me some work around in case if there is no solution at the moment. I am sorry for reporting/posting issues with recent updates.

Answer 1

Recently (https://tug.org/pipermail/tex-live-commits/2018-September/007278.html) listings switched the internal separator in the macro \lstKV@SwitchCases from & to :. According to the comments in the source that had to happen because of adding frame=none to lstlisting options in \lstdefinestyle gives error with tabular.

You should contact the maintainer of lstlinebgrd via the official channels mentioned in the documentation and ask him to update his package. (edit: Reported at https://bitbucket.org/martin_scharrer/lstaddons/issues/2/lstlinebgrd-broken-with-recent-update-of)

In the meantime here is a very crude workaround that fixes the definition of the affected \lst@Key{numbers}. This should restore lstlinebgrd to its former glory, but it is not very elegant because it essentially ends up copying the definition of \lst@Key{numbers} from lstlinebgrd.sty.

\documentclass{article}
\usepackage{listings}
\usepackage{xcolor}

\makeatletter
\let\old@lstKV@SwitchCases\lstKV@SwitchCases
\def\lstKV@SwitchCases#1#2#3{}
\makeatother
\usepackage{lstlinebgrd}
\makeatletter
\let\lstKV@SwitchCases\old@lstKV@SwitchCases

\lst@Key{numbers}{none}{%
    \def\lst@PlaceNumber{\lst@linebgrd}%
    \lstKV@SwitchCases{#1}%
    {none:\\%
     left:\def\lst@PlaceNumber{\llap{\normalfont
                \lst@numberstyle{\thelstnumber}\kern\lst@numbersep}\lst@linebgrd}\\%
     right:\def\lst@PlaceNumber{\rlap{\normalfont
                \kern\linewidth \kern\lst@numbersep
                \lst@numberstyle{\thelstnumber}}\lst@linebgrd}%
    }{\PackageError{Listings}{Numbers #1 unknown}\@ehc}}
\makeatother

\begin{document}
\begin{lstlisting}[linebackgroundcolor={\ifodd\value{lstnumber}\color{lightgray}\fi}]
Lorem
ipsum
dolor
\end{lstlisting}
\end{document}