Latin Modern Extensionを基に伸長可能な波括弧の尖端部分を中央から上部へ移動した拡張フォント

lmextb10.vpl

(VTITLE LMEX UPPER BRACE)
(FAMILY lmextb)
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セットアップ

VPLファイルから仮想フォント（VFとTFM）に変換し、これらを適切なTeXツリーに配置することで利用可能になります。

$ vptovf lmextb10.vpl lmextb10.vf lmextb10.tfm

利用例

\RequirePackage{plautopatch}
\documentclass[uplatex, dvipdfmx]{jsarticle}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{bigdelim}
\usepackage{array}

\DeclareFontFamily{OMX}{lmextb}{}
\DeclareFontShape{OMX}{lmextb}{m}{n}{%
    <->sfixed*lmextb10%
    }{}
\DeclareSymbolFont{largebrace}{OMX}{lmextb}{m}{n}
\DeclareMathDelimiter{\ulbrace}
    {\mathopen}{symbols}{"66}{largebrace}{"08}
\DeclareMathDelimiter{\urbrace}
    {\mathclose}{symbols}{"67}{largebrace}{"09}

\begin{document}

\begin{tabular}{l@{}>{\textbullet}l}
  \ldelim\{{5}{*}
    & 魚類   \\
    & 両生類 \\
    & は虫類 \\
    & 鳥類   \\
    & 哺乳類 \\
\end{tabular}
\hspace{5zw}
\begin{tabular}{l@{}>{\textbullet}l}
  \ldelim\ulbrace{5}{*}
    & 魚類   \\
    & 両生類 \\
    & は虫類 \\
    & 鳥類   \\
    & 哺乳類 \\
\end{tabular}

\end{document}