texmath-0.12.5: test/writer/mml/binomial_coefficient.test

<<< native
[ EStyled TextBold [ EIdentifier "C" ]
, EDelimited
    "("
    ")"
    [ Right (EIdentifier "n")
    , Right (ESymbol Pun ",")
    , Right (EIdentifier "k")
    ]
, ESymbol Rel "="
, ESubsup
    (EStyled TextBold [ EIdentifier "C" ])
    (EIdentifier "k")
    (EIdentifier "n")
, ESymbol Rel "="
, ESub (EGrouped []) (EIdentifier "n")
, ESub (EStyled TextBold [ EIdentifier "C" ]) (EIdentifier "k")
, ESymbol Rel "="
, EDelimited
    "("
    ")"
    [ Right (EFraction NoLineFrac (EIdentifier "n") (EIdentifier "k"))
    ]
, ESymbol Rel "="
, EFraction
    NormalFrac
    (EGrouped [ EIdentifier "n" , ESymbol Ord "!" ])
    (EGrouped
       [ EIdentifier "k"
       , ESymbol Ord "!"
       , ESpace (1 % 6)
       , EDelimited
           "("
           ")"
           [ Right (EIdentifier "n")
           , Right (ESymbol Bin "\8722")
           , Right (EIdentifier "k")
           ]
       , ESymbol Ord "!"
       ])
]
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <mstyle mathvariant="bold">
      <mi>𝐂</mi>
    </mstyle>
    <mrow>
      <mo stretchy="true" form="prefix">(</mo>
      <mi>n</mi>
      <mo>,</mo>
      <mi>k</mi>
      <mo stretchy="true" form="postfix">)</mo>
    </mrow>
    <mo>=</mo>
    <msubsup>
      <mstyle mathvariant="bold">
        <mi>𝐂</mi>
      </mstyle>
      <mi>k</mi>
      <mi>n</mi>
    </msubsup>
    <mo>=</mo>
    <msub>
      <mrow />
      <mi>n</mi>
    </msub>
    <msub>
      <mstyle mathvariant="bold">
        <mi>𝐂</mi>
      </mstyle>
      <mi>k</mi>
    </msub>
    <mo>=</mo>
    <mrow>
      <mo stretchy="true" form="prefix">(</mo>
      <mfrac linethickness="0">
        <mi>n</mi>
        <mi>k</mi>
      </mfrac>
      <mo stretchy="true" form="postfix">)</mo>
    </mrow>
    <mo>=</mo>
    <mfrac>
      <mrow>
        <mi>n</mi>
        <mi>!</mi>
      </mrow>
      <mrow>
        <mi>k</mi>
        <mi>!</mi>
        <mspace width="0.167em" />
        <mrow>
          <mo stretchy="true" form="prefix">(</mo>
          <mi>n</mi>
          <mo>−</mo>
          <mi>k</mi>
          <mo stretchy="true" form="postfix">)</mo>
        </mrow>
        <mi>!</mi>
      </mrow>
    </mfrac>
  </mrow>
</math>