Joseph Wright

This is very much on the edge of what I'd see in the scope of the package. I'd like to know where this is used: there are some very odd...

I'll take a look. I can see where that line comes from in `siunitx` but I'm not sure why it's not being expanded by `tex4ht`.

At the cost of loosing font control, one could use ```latex \ExplSyntaxOn \cs_gset_protected:Npn \__siunitx_print_math_auxii:n #1 { \tl_set:Nn \l__siunitx_print_tmp_tl {#1} \exp_args:NNnx \tl_replace_all:Nnn \l__siunitx_print_tmp_tl { ^ } { \token_to_str:N ^ } \exp_args:NV...

@michal-h21 I'd worked that out :) I remember now that in v2 I just gave up with units and forced text mode. That's really sub-optimal from a semantic point of...

I've got a few ideas about how to approach this. The best is if there is a way to know we are in MathJax mode: @michal-h21 is there a flag?...

@michal-h21 As my hack touches an internal function, it's really not suitable for anything outside of `siunitx` itself. I'm pondering if you need an API here or whether I can...

I've updated the code to do a better job here, but I still need to think about how best to expose 'extra search and replace' to tex4ht. I'm still wondering...

@michal-h21 I've still only got an internal interface, so you'll want something like ```latex \tl_if_exist:NTF \l__siunitx_print_math_html_tl { \tl_put_right:Nn \l__siunitx_print_math_html_tl { & { &amp; } < { &lt; } > {...

Actually, you might need ``` \tl_put_right:Nx \l__siunitx_print_math_html_tl { & { \token_to_str:N & amp ; } < { \token_to_str:N & lt ; } > { \token_to_str:N & gt ; } }...

Er, well, yes: I have a test for an entirely empty input (even though semantically it's questionable), but not for having something that expands to an empty number. What's the...