CTAN update: l3kernel

The LaTeX Project Team submitted an update to the

                     l3kernel

bundle.

Version:  2026-03-20
License:  lppl1.3c

Summary description:  LaTeX3 programming conventions

Announcement text:
----------------------------------------------------------------------
 
 ## [2026-03-20]

 ### Added

 - `en`-type variants of `\text_...case:nn`

 ### Changed

 - Adjust internal expansion in case functions to support `biblatex`
   (transitional measure)

 ## [2026-03-16]

 ### Added

 - `\box_(g)frame:Nnn` and `\box_(g)underline:Nnn`
 - `\vbox:w`, `\vbox_top:w`, `\vbox_center:w` and their `:nw` and
   `_to_ht:nw` versions
 - Debugging switch `check-assertions`, `\debug_assert:nN(n)`, and
   `\debug_assert:nn(n)` (issue \#1840)

 ### Changed

 - Apply `\text_declare_purify_equivalent:Nn` to commands
   immediately following `\protect`
 - Adjust `\vbox_center:nn` to give identical dimensions to
   `\vcenter`

 ## [2026-02-18]

 ### Added

 - `\coffin_pole:Nn`
 - `\dim_horizontal:(n|N|c)` and `\dim_vertical:(n|N|c)`
 - `\keyval_map_inline:nnn`, `\keyval_map_break:`, and `\keyval_map_break:n`
 - `\msg_expandable_error:nneee` and related `e`-type variants
 - `\vbox_center:n`, `\vbox_center:nn`, `\vbox:nn` and `\vbox_top:nn`
 - `\vbox_top_to_ht:nn` and `\vbox_center_to_ht:nn`
 - `\opacity_begin:n`/`\opacity_end:` and fill/stroke versions
 - Efficient `v`-type variants for `\dim_compare:nNn(TF)` and
   `\int_compare:nNn(TF)`
 - `\text_bcp_parse:n`

----------------------------------------------------------------------

The package’s Catalogue entry can be viewed at
   https://ctan.org/pkg/l3kernel

The package’s files themselves can be inspected at
   https://mirrors.ctan.org/macros/latex/required/l3kernel/

------------------------------------------------------------------------

   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese

------------------------------------------------------------------------

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