2.10 Space Characters

<..plain,latex mathltx..>+
 \def\:nbsp{\ifmtext <.unicode space.>\else\ifmathltx
     \Tg<mspace />\else <.unicode space.>\fi\fi}
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<..unicode space..>
 \leavevmode\special{t4ht@+\string&{35}x00A0{59}}x%
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<..configure html-mltx frenchb..>
 \Configure{frenchb-nbsp}
    {\ifmtext <.unicode space.>\else\ifmathltx
        \Tg<mspace class="frenchb-nbsp" />%
     \else
       \ht:special{t4ht@?unhskip}\HCode{<span class="frenchb-thinspace">}%
       <.unicode space.>\HCode{</span>}%
     \fi\fi
     \setbox\tmp:bx=\hbox\bgroup}
    {\egroup}
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