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I thought `tex4ht` worked like `pandoc`. Now I know I was wrong. I have not yet decided how many hooks should be provided by `tabularray`. @u-fischer and @michal-h21: You could...

I decide to reopen this issue to record experiments with `tex4ht` here.

@michal-h21 I have tried to improve tex4ht support with public hooks and varaibles based on your code in tex4ht and your comment in issue #197. Please see the latest `trial/tabularray.sty`...

We need to use our own `hfuzz` dimension instead of global `\hfuzz` dimension in `tabularray`. PS: I just followed the usage of `tabu` packgae when I was writing this part...

This bug has been fixed.

Could you provide more details?

Then it is enough to use `\ifdefined` check: ```tex \ifdefined\tinytableDefineColor\else \NewTableCommand{\tinytableDefineColor}[3]{\definecolor{#1}{#2}{#3}}% \fi ``` Update: sorry, it should be ```tex \ifcsname __tblr_table_command_tinytableDefineColor:w\endcsname\else \NewTableCommand{\tinytableDefineColor}[3]{\definecolor{#1}{#2}{#3}}% \fi ```

@dahosek maybe `cmd` option is what you want: ```tex \documentclass{article} \usepackage{tabularray,graphicx} \begin{document} \newcommand{\obliqueheader}[1]{\rotatebox{45}{#1}} \begin{tblr}{colspec=lrr,row{1}={cmd=\obliqueheader}} Paper size & Height (mm) & Width (mm) \\ \hline A4 & 297 & 210 \\...

@dahosek In fact, this is a duplicate of #98. In the future, you will be able to write ```tex \NewTableCommand\obliqueheader{\SetCell{rotate=45}} ```

@dahosek Maybe the manual is not clear enough about the usage of `\NewTableCommand`. In the code, `tabularray` extracts and executes table commands from the beginning of each cell before typesetting...