committed to tl previously, closing.

Dear all,

The following code fails to compile when option new-accents is enabled:

> \documentclass{article}
>
> \usepackage{babel}
>
> \begin{document}
> Look at $\tilde X$ and $\tilde F$.
> \end{document}

According to the message, it seems that the conflict is originated from unicode.4ht:

> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \ConfigureHinput{babel}
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \Configure{quotedblbase}{\x:unicode{201E}}
> \Configure{quotesinglbase}{\x:unicode{201A}}
> \Configure{accent}\bbl@umlauta
> \bbl@umlaute{H{1E26}h{1E27}W{1E84}w{1E85}X{1E8C}x{1E8D}%
> t{1E97}A{00C4}E{00CB}I{00CF}O{00D6}U{00DC}%
> a{00E4}e{00EB}i{00EF}o{00F6}u{00FC}y{00FF}%
> Y{0178}\i{00EF}%
> {}{34}}
> {\a:accents{}{#1}} {\b:accents{uml}{#1}{#2}}

The new-accents case is not treated specially as, say, html0.4ht:

> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \ConfigureHinput{babel}
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \Configure{quotedblbase}{\HCode{&\#132;}}
> \Configure{quotesinglbase}{\HCode{&\#130;}}
>
> \ifx \@begindocumenthook\:UnDef\else
> \:CheckOption{new-accents} \if:Option \else
> \def\:temp{russian}\ifx \languagename\:temp
> \Configure{accent}\"\ddot{A{A}E{E}I{I}O{O}U{U}Y%
> {Y}a{a}e{e}i{i}\i{i}o{o}u{u}y{y}å{e}{}{34}}
> {\a:accents{uml}{#1}}
> {\def\:temp{>}\def\:tempa{#2}\ifx \:temp\:tempa\HCode{»}%
> \else \def\:temp{<}\ifx \:temp\:tempa\HCode{«}%
> \else \b:accents{uml}{#1}{#2}\fi\fi}
>
> \fi
> \fi\fi