[tex4ht] split environment and exerquiz package

[Tomas Davidek]

Ok, thanks, so let's try to solve each problem separately. Please find 
attach a simple example of split environment. The tex-file is ok, but 
make4  -a debug split_ex.tex gives the error message

=========

! Package amsmath Error: \begin{split} won't work here.

See the amsmath package documentation for explanation.
Type  H <return>  for immediate help.
  ...

l.21   \end{split}
=========

The full log file is also attached.

Can you please have a look? Any hint is appreciated.

Thanks a lot,

best regards, Tomas

On 1/7/21 11:32 PM, Nasser M. Abbasi wrote:
> On 1/7/2021 3:34 PM, Tomas Davidek wrote:
>> Hello,
>>
>>      I made several tests with tex4ht. The tool nicely converts most of
>> the objects/environments, but I noticed two problems:
>>
>> 1. split environment
>>
>> I use that for typesetting long formulas, for instance
>>
>> This is my very long formula
>>
>> \begin{displaymath}
>>      \begin{split}
>>         \tau(\eta^0) & = \frac{\hbar}{\Gamma(\eta^0)} =
>>         \frac{\hbar c}{c \Gamma(\eta^0)} =
>>         \frac{0{,}197~\gev\cdot\mathrm{fm}}{3\cdot
>>           10^{8}~\mathrm{m}\cdot\mathrm{s}^{-1}\times 
>> 1{,}30~\mathrm{keV}}
>>           = \\
>>         & = \frac{0{,}197\cdot 10^{-15}~\gev\cdot\mathrm{m}}{3\cdot
>>           10^{8}~\mathrm{m}\cdot\mathrm{s}^{-1}\times 1{,}30\cdot
>>           10^{-6}~\mathrm{GeV} = % \nonumber\\
>>         0{,}0505\cdot 10^{-17}~\mathrm{s} = 5{,}05\cdot
>>         10^{-19}~\mathrm{s} % \nonumber
>>       \end{split}
>> \end{displaymath}
>>
>> This works perfectly in pdflatex, but when running htlatex, I get the
>> following error message:
>>
>
> It would be better to show a complete self contained example, not math 
> fragment.
> And the complete commands you used to compile. This way no one have to 
> guess.
>
> It is also better to use make4ht not htlatex. make4ht is now
> the standard way to compile latex to HTML.
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