在索引中的页码后添加“；”

Question

我正在尝试使用类似索引的字典，其中定义了一些在文本中具有不同变体的术语。似乎使用 更容易indexing。我尝试将一个索引项的子项放在同一行上，并用;

以下是 MWE：

            \documentclass{article}
            \usepackage{makeidx}
            \makeindex
            \def\igobble#1 {}
            \makeatletter
            % we don't want a page break before a subitem
            \renewcommand\subitem{\@idxitem\nobreak\hspace*{20\p@}}
            \makeatother
            \makeatletter
            % we don't want a page break before the first subitem
            \newif\iffirst@subitem
            \def\@idxitem{%
                \par\hangindent40\p@ % original
                \first@subitemtrue   % added
            }
            \def\subitem{%
            %   \par\hangindent40\p@
                \iffirst@subitem
                \nobreak
                \first@subitemfalse
                \fi
                %\hspace*{20\p@}
                }
            \makeatother


            \begin{document}

            some text\index{k} with some index entries\index{b}
            and some\index{c} \emph{see also} entries as well.
            \index{Term to define!zzzzz@\igobble |seealso {b, c}}
            \index{Term to define!\emph{Derived term} here is its definition and here is where we see it \textbf{bcd 12}}
            \index{Term to define!\emph{Anoter derived term} here is its definition and here is where we see it \textbf{bcccc 17}}
            \index{c!zzzzz@\igobble |seealso {a, b}}

            \printindex
            \end{document}

subitem宏取自此处如何防止在索引中的第一个子条目之前出现列中断？

这是输出。红色部分是我想要的页码前面和;页码后面的p。