How to change the Math Delimiter font [duplicate]

Question

I am using minion math font to change the operator as minion math.

I successfully changed display math operator like \sum, \int etc.,

But I am unable to change the Minion Math font "Math Delimiter" like

\big( \big), \Big( \Big), \bigg( \bigg), \Bigg( \Bigg)
\big[ \big], \Big[ \Big], \bigg[ \bigg], \Bigg[ \Bigg]
\left( \right)
\left[ \right]

MWE:

\documentclass{book}

\usepackage{amsmath}
\usepackage{amssymb}

\makeatletter
\DeclareFontEncoding{MXP}{}{}
\DeclareFontSubstitution{MXP}{minionmath}{m}{n}
\DeclareSymbolFont{operators}{OT1}{minionmath}{m}{n}
\DeclareSymbolFont{MMlargesymbols}{MXP}{minionmath}{d}{n}
\let\sum\relax
\let\intop\relax
\DeclareMathSymbol{\sum}{\mathop}{MMlargesymbols}{"48}
\DeclareMathSymbol{\intop}{\mathop}{MMlargesymbols}{"50}
    \def\int{\intop\nolimits}

\DeclareMathDelimiter{\lgroup} % extensible ( with sharper tips
     {\mathopen}{MMlargesymbols}{"3A}{largesymbols}{"3A}
\DeclareMathDelimiter{\rgroup} % extensible ) with sharper tips
     {\mathclose}{MMlargesymbols}{"3B}{largesymbols}{"3B}
\makeatother

\begin{document}



I need to fix the minion math font below mentioned Math Delimiters

\begin{align*}
&\big(\sum\frac{a}{b} \big), \Big(\int \frac{a}{b}\Big), \bigg(\frac{a}{b} \bigg), \Bigg(\frac{a}{b} \Bigg)\\
&\big[ \frac{a}{b}\big], \Big[\frac{a}{b} \Big], \bigg[\frac{a}{b} \bigg], \Bigg[\frac{a}{b} \Bigg]\\
&\left( \frac{a}{b}\right)\\
&\left[ \frac{a}{b}\right]
\end{align*}


\end{document}

Current Output:

Now I change the \sum, \int symbols in my current output.

But I am unable to change the font "Math Delimiter". How to fix this issue

Please advise.

Answer 1

Use the proper LaTeX support, with the package minionmath.sty (as provided on my website). There's no need for all the stuff between \makeatletter and \makeatother. Just use

\usepackage[withamsmath]{minionmath}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{minionamsmath}

in this order (the option "withamsmath" and the small package "minionamsmath" take care with some compatibility issues between minionmath and amsmath). Then all the delimiters will work correctly.

Answer 2

I simply copied the definitions of these single glyphs you want from minionmath.sty. You have to undefine the operators before reassigning and you have to consistently replace largesymbols by MNlargesymbols (you do not want to overwrite largesymbols).

For a consistent look and feel, however, I recommend Johannes' approach to use MinionMath as a whole.

\documentclass{article}

\DeclareFontEncoding{MXP}{}{}
\DeclareFontSubstitution{MXP}{minionmath}{m}{n}
\DeclareSymbolFont{MNlargesymbols}{MXP} {minionmath}{m}{n}

\let\sum=\undefined
\let\intop=\undefined
\DeclareMathSymbol{\sum}{\mathop}{MNlargesymbols}{64}
\DeclareMathSymbol{\intop}{\mathop}{MNlargesymbols}{80}

\DeclareMathDelimiter{\lgroup}{\mathopen}%
  {MNlargesymbols}{70}%
  {MNlargesymbols}{70}
\DeclareMathDelimiter{\rgroup}{\mathclose}%
  {MNlargesymbols}{71}%
  {MNlargesymbols}{71}

\begin{document}

\[ \sum \int \left( \rule{0pt}{1cm} \right) \]

\end{document}