Accent through ‘accents’ Configurations

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<.shared latex,amsmath math accents .>
\def\:tempc#1{\HCode{\string\dddot\l:brace}#1\HCode{\r:brace}}
\HLet\dddot=\:tempc
\def\:tempc#1{\HCode{\string\ddddot\l:brace}#1\HCode{\r:brace}}
\HLet\ddddot=\:tempc

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<..shared latex,amsmath math accents ..>

\def\:tempc#1{\HCode{\string\H\l:brace}#1\HCode{\r:brace}}
\HLet\H=\:tempc
\def\:tempc#1{\HCode{\string\acute\l:brace}#1\HCode{\r:brace}}
\HLet\acute=\:tempc
\def\:tempc#1{\HCode{\string\bar\l:brace}#1\HCode{\r:brace}}
\HLet\bar=\:tempc
\def\:tempc#1{\HCode{\string\breve\l:brace}#1\HCode{\r:brace}}
\HLet\breve=\:tempc
\def\:tempc#1{\HCode{\string\c\l:brace}#1\HCode{\r:brace}}
\HLet\c=\:tempc
\def\:tempc#1{\HCode{\string\cedil\l:brace}#1\HCode{\r:brace}}
\HLet\cedil=\:tempc
\def\:tempc#1{\HCode{\string\check\l:brace}#1\HCode{\r:brace}}
\HLet\check=\:tempc
\def\:tempc#1{\HCode{\string\d\l:brace}#1\HCode{\r:brace}}
\HLet\d=\:tempc
\def\:tempc#1{\HCode{\string\ddot\l:brace}#1\HCode{\r:brace}}
\HLet\ddot=\:tempc
\def\:tempc#1{\HCode{\string\dot\l:brace}#1\HCode{\r:brace}}
\HLet\dot=\:tempc
\def\:tempc#1{\HCode{\string\grave\l:brace}#1\HCode{\r:brace}}
\HLet\grave=\:tempc
\def\:tempc#1{\HCode{\string\hat\l:brace}#1\HCode{\r:brace}}
\HLet\hat=\:tempc
\def\:tempc#1{\HCode{\string\ring\l:brace}#1\HCode{\r:brace}}
\HLet\ring=\:tempc
\def\:tempc#1{\HCode{\string\t\l:brace}#1\HCode{\r:brace}}
\HLet\t=\:tempc
\def\:tempc#1{\HCode{\string\tilde\l:brace}#1\HCode{\r:brace}}
\HLet\tilde=\:tempc
\def\:tempc#1{\HCode{\string\udot\l:brace}#1\HCode{\r:brace}}
\HLet\udot=\:tempc
\def\:tempc#1{\HCode{\string\uml\l:brace}#1\HCode{\r:brace}}
\HLet\uml=\:tempc
\def\:tempc#1{\HCode{\string\vec\l:brace}#1\HCode{\r:brace}}
\HLet\vec=\:tempc

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<..shared latex,amsmath math accents ..>+

\ifx\jsm:r\:UnDef
   \let\jsm:r\r
   \def\:tempc#1{\ifmmode\HCode{\string\r\l:brace}#1\HCode{\r:brace}%
                 \else \jsm:r{#1}\fi }
   \HLet\r=\:tempc
\fi

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<..config mathltx accents ..>

<.temp indirect accents .>
\Configure{accents}
   {\ifmmode \expandafter\mathord\fi
      {<.temp hcode accents .>%
    \ht:special{t4ht@[}\if!#1!x\else#2\fi
    \ht:special{t4ht@]}}}
   {\ifmathltx
       \ifmtext <.accent in text mode .>%
       \else    \AccentMath{<.under over accents .>}\fi
    \else       <.accent in text mode .>\fi
   }

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<..accent in text mode ..>

\expandafter\ifx \csname :#1:over\endcsname\relax
    \expandafter\ifx \csname :#1:under\endcsname\relax
       \AccentMath{<.under over accents .>}%
    \else #3\csname :#1:under\endcsname \fi
\else #3\csname :#1:over\endcsname \fi

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<..under over accents ..>

\expandafter\ifx \csname :#1:over\endcsname\relax
   <.under accents .>%
\else \expandafter\ifx \csname :#1:under\endcsname\relax
   <.over accents .>%
\else
   <.both accents .>%
\fi \fi

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<..under accents ..>

\HCode{<munder\Hnewline
    accent="true"><mrow\Hnewline>}#3\HCode{</mrow>}%
       \csname :#1:under\endcsname
    \HCode{</munder>}%

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<..over accents ..>

\HCode{<mover\Hnewline
    accent="true"><mrow\Hnewline>}#3\HCode{</mrow>}%
    \csname :#1:over\endcsname
    \HCode{</mover-1>}%

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<..both accents ..>

\HCode{<munderover-3\Hnewline
    accent="true"><mrow\Hnewline>}#3\HCode{</mrow>}%
    \csname :#1:under\endcsname
    \csname :#1:over\endcsname
    \HCode{</munderover>}%

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2.7 Accent through ‘accents’ Configurations