Changes
.nowrap already handles no-break
<span class="frac nowrap">{{#if:{{{3|}}}
|{{{1}}}<sup> {{{2}}}</sup>⁄<sub>{{{3}}}</sub>
|{{#if:{{{2|}}}
|<sup>{{{1}}}</sup>⁄<sub>{{{2}}}</sub>
|{{#if:{{{1|}}}
|<sup>1</sup>⁄<sub>{{{1}}}</sub>
|⁄
}}
}}
}}</span><noinclude>
{{documentation}}
</noinclude>
|{{{1}}}<sup> {{{2}}}</sup>⁄<sub>{{{3}}}</sub>
|{{#if:{{{2|}}}
|<sup>{{{1}}}</sup>⁄<sub>{{{2}}}</sub>
|{{#if:{{{1|}}}
|<sup>1</sup>⁄<sub>{{{1}}}</sub>
|⁄
}}
}}
}}</span><noinclude>
{{documentation}}
</noinclude>