tabularray broken with latest release of l3kernel

[ArchangeGabriel]

After upgrading my TeX Live install today, which included https://tug.org/svn/texlive?revision=69870&view=revision, I’m facing an error compiling any document that use tabularray:

(/usr/local/texlive/2023/texmf-dist/tex/latex/tabularray/tabularray.sty
(/usr/local/texlive/2023/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/local/texlive/2023/texmf-dist/tex/latex/l3backend/l3backend-luatex.def))
! Undefined control sequence.
<argument> \g__tblr_defined_hdash_styles_prop 
                                   
l.1089 ...yval:Nn \g__tblr_defined_hdash_styles_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_defined_vdash_styles_prop 
                                   
l.1091 ...yval:Nn \g__tblr_defined_vdash_styles_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_table_prop 
                            
l.2956 ...from_keyval:Nn \g__tblr_initial_table_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_rows_prop 
                           
l.2962 ..._from_keyval:Nn \g__tblr_initial_rows_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_columns_prop 
                              
l.2973 ...om_keyval:Nn \g__tblr_initial_columns_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_cells_prop 
                            
l.2982 ...from_keyval:Nn \g__tblr_initial_cells_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_hlines_prop 
                             
l.2992 ...rom_keyval:Nn \g__tblr_initial_hlines_prop
                                                  
? 
! Undefined control sequence.
<argument> \g__tblr_initial_vlines_prop 
                             
l.2997 ...rom_keyval:Nn \g__tblr_initial_vlines_prop
                                                  
? 
)

I’ve also reported it at lvjr/tabularray#474 in case it should be fixed there.

[josephwright]

The error is right in the sense \g__tblr_defined_hdash_styles_prop is undefined at that point: the current code in tabularray is trying to use (e.g.) \prop_gset_from_keyval:Nn without first declaring the variable.That's never been supported: it's just that internal changes make it an error. It would always have been flagged up if loading the debug setup.

I'll leave open for the moment, but really this needs to be fixed in tabularray.

[u-fischer]

It would always have been flagged up if loading the debug setup.

@josephwright Was that really catched by the debug setup? I don't get an error in older systems with

\ExplSyntaxOn
\debug_on:n { check-declarations , deprecation }
\ExplSyntaxOff

\documentclass{article}
\begin{document}
\ExplSyntaxOn
\prop_gset_from_keyval:Nn \g_blub_prop{a=b}
\ExplSyntaxOff    
\end{document}

[josephwright]

@u-fischer That would be an omission in the debug module, but the point still stands: we do require declaration before use in general (exception: variables used to store keys are 'auto-generated').

[josephwright]

@u-fischer I've fixed that issue - I think it was picked up immediately before the latest update, but not long before that so likely could be missed.

[u-fischer]

@josephwright acro is affected too and there it is \prop_clear:N which was not caught by the debug option (and now errors):

\ExplSyntaxOn
\debug_on:n { check-declarations , deprecation }
\ExplSyntaxOff

\documentclass{article}
\begin{document}
\ExplSyntaxOn
\prop_clear:N \l_blub_prop
\ExplSyntaxOff    
\end{document}

[josephwright]

@u-fischer I guess \prop_clear:N somehow got missed in debugging too :(

[muzimuzhi]

This is solved with tabularray 2024A (2024-02-16), see lvjr/tabularray@0060844, corresponding CTAN announcement, and TeX Live svn r69926.