Wrong Subsection Numbering in Assamese typing with latexbangla package and XeTex

Question

I am writing an Assamese book using XeTex. While using \subsection command, it starts numbering without the section number it belongs to. \subsubsection command does not print any number and also its indentation is wrong. I have tried with \renewcommand. But could not fix the error. Using ployglossia also results into same condition. Further, in order to get chapter numbers in Assamese numerals, I had to define \bengalinumeral as shown in the following.

    \documentclass[12pt,a4paper]{book}
    % For a bilingual document
    \usepackage{fontspec}
    \usepackage[banglamainfont=SolaimanLipi, banglattfont=SolaimanLipi ]{latexbangla}
    %\setmainlanguage[changecounternumbering=true]{bengali}
    \setotherlanguage{english}
    \usepackage{fancyhdr}
        \makeatletter
        \def\bengalidigits#1{\expandafter\@bengali@digits #1@}
        \def\@bengali@digits#1{%
          \ifx @#1
          \else
            \ifx0#1০\else\ifx1#1১\else\ifx2#1২\else\ifx3#1৩\else\ifx4#1৪\else\ifx5#1৫\else\ifx6#1৬\else\ifx7#1৭\else\ifx8#1৮\else\ifx9#1৯\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
            \expandafter\@bengali@digits
          \fi
        }
        \makeatother



    \def\bengalinumber#1{\bengalidigits{\number#1}}
    \def\bengalinumeral#1{\bengalinumber{\csname c@#1\endcsname}}
    \renewcommand\thechapter{\bengalinumeral{chapter}}
    \renewcommand\thesection{\bengalinumeral{section}}
    \renewcommand{\thesubsection}{\thesection.\bengalinumeral{subsection}}
    \renewcommand{\thesubsubsection}{\thesection.\thesubsection.\bengalinumeral{subsubsection}}
    \numberwithin{subsection}{section}
    \numberwithin{subsubsection}{subsection}
\begin{document}
\chapter{ওভটনি সোঁত}
%\begin{bengali}
\section{পাতনি}
    abcdefgh কখগঘঙচছজঝঞ টঠডঢণ তথদধন পফবভম যৰলৱ শ ষ স হ ক্ষ 
    আ অা ই ঈ উ ঊ ঋ এ ঐ ও ঔ
    \subsection{কককক}
    abcdefgh কখগঘঙচছজঝঞ টঠডঢণ তথদধন পফবভম যৰলৱ শ ষ স হ ক্ষ 
     আ 

    অ আ ই ঈ উ ঊ ঋ এ ঐ ও ঔ
    \subsubsection{খখখখ}
    \section{হহহহ}
    \subsection{এয়া চাবচেক্চন}

\end{document}

The result I got is

Would anyone guide me please.

Thanks and regards.

Answer 1

Welcome to tex.se.

There might be the latexbangla-polyglossia interaction causing all this, with a recent polyglossia change to be put into latexbangla.

One question per question is the expected format, otherwise things can becoming confusing about what was answered or if it helped.

Perhaps this bugfix request is possibly related: You can't use `macro parameter character #' error in latexbangla and polyglossia

If I activate polyglossia manually (until the latexbangla bugfix goes in), and number all levels and comment out your code changes, the numbering format looks OK now.

You have an extra space because a % is missing after \ifx @#1. See bengalidigits.sty package under polyglossia. Also see same package for use of \ifcase statement (more compact).

Section-level numbering can be set with \setcounter{secnumdepth}{x}, where x = 3 by default.

Your digit/numeral/section redefinitions codeblock introduces spaces and switches items off, but I do not have time to debug it. In any case, if I understand correctly, all this seems to be being done by latexbangla using polyglossia (e.g., gloss-bengali.ldf file), so after the fix goes in, it should be alright.

MWE

 \documentclass[12pt,a4paper]{book}
    % For a bilingual document
    \usepackage{fontspec}
    \usepackage[banglamainfont=SolaimanLipi, banglattfont=SolaimanLipi ]{latexbangla}
    %\setmainlanguage[changecounternumbering=true]{bengali}

%activate polyglossia
\setdefaultlanguage[numerals=Bengali,
changecounternumbering=true]{bengali}
%number all levels
\setcounter{secnumdepth}{5}

    \setotherlanguage{english}
    \usepackage{fancyhdr}
%        \makeatletter
%        \def\bengalidigits#1{\expandafter\@bengali@digits #1@}
%        \def\@bengali@digits#1{%
%          \ifx @#1
%          \else
%            \ifx0#1০\else\ifx1#1১\else\ifx2#1২\else\ifx3#1৩\else\ifx4#1৪\else\ifx5#1৫\else\ifx6#1৬\else\ifx7#1৭\else\ifx8#1৮\else\ifx9#1৯\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
%%%%%%%    \ifcase#1০\or১\or২\or৩\or৪\or৫\or৬\or৭\or৮\or৯\fi
%%%%%%    \ifcase#1০\or১\or২\or৩\or৪\or৫\or৬\or৭\or৮\or৯\fi
%            \expandafter\@bengali@digits
%          \fi
%        }
%%%%%%%\def\bengalidigits#1{\expandafter\@bengali@digits #1@}
%%%%%%%\def\@bengali@digits#1{%
%%%%%%%  \ifx @#1% terminate
%%%%%%%  \else
%%%%%%%%    \ifcase#1০\or১\or২\or৩\or৪\or৫\or৬\or৭\or৮\or৯\fi
%%%%%%%    \expandafter\@bengali@digits
%%%%%%%  \fi
%%%%%%%}
%%%%%%
%%%%%%
%        \makeatother



%    \def\bengalinumber#1{\bengalidigits{\number#1}}
%    \def\bengalinumeral#1{\bengalinumber{\csname c@#1\endcsname}}
%    \renewcommand\thechapter{\bengalinumeral{chapter}}
%    \renewcommand\thesection{\bengalinumeral{section}}
%    \renewcommand{\thesubsection}{\thesection.\bengalinumeral{subsection}}
%    \renewcommand{\thesubsubsection}{\thesection.\thesubsection.\bengalinumeral{subsubsection}}
%    \numberwithin{subsection}{section}
%    \numberwithin{subsubsection}{subsection}
\begin{document}
\chapter{ওভটনি সোঁত}
\section{পাতনি x}
\subsection{কককক y}
\subsubsection{খখখখ z}
\paragraph{খখখখ z1}
\subparagraph{খখখখ z2}
    \section{হহহহ}
    \subsection{এয়া চাবচেক্চন}
\subsection{কককক}
\subsubsection{খখখখ}
\paragraph{খখখখ}
\subparagraph{খখখখ}
\end{document}