framedmulticol.sty

%%
%% This is file `framedmulticol.sty'.
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3 of this license or (at your option) any
%% later version.
%% The latest version of the license is in
%%    http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of
%% LaTeX version 2003/06/01 or later.
%%
%% This work has the LPPL maintenance status `maintained'.
%%
%% The Current Maintainer of this work is Wenjian Chern.
%%
%% This work consists of the file framedmulticol.sty.
%%
%%
%% Since this package is based on the multicol and adjmulticol package,
%% Copyright 1989-2005 Frank Mittelbach, the following additional
%% condition is added to the licensing terms.  The term ``multicol''
%% here should be interpreted as ``multicol and/or adjmulticol and/or 
%% framedmulticol'' package, as appropriate.
%%
%%  In addition to the terms of LPPL any distributed version
%%  (unchanged or modified) of multicol has to keep the statement
%%  about the moral obligation for using multicol. In case of major
%%  changes where this would not be appropriate the author of the
%%  changed version should contact the copyright holder.
%%
%%
%%  Moral obligation for using multicol:
%%  ------------------------------------
%%
%%  Users of multicol who wish to include or use multicol or a modified
%%  version in a proprietary and commercially market product are asked
%%  under certain conditions (see below) for the payment of a license
%%  fee.  The size of this fee is to be determined, in each instance,
%%  by the commercial user, depending on his/her judgment of the value of
%%  multicol for his/her product.
%%
%%
%%  The conditions for this are as follows:
%%
%%   The producer of a proprietary and commercially market product
%%   that involves typesetting using multicol is asked to determine
%%   the value of a license fee for using multicol if
%%
%%   - the product is a document and the producer has decided to
%%     include multicol to typeset (parts of) the document or has
%%     directed the author of the document to include multicol (for
%%     example, by providing a class file to be used by the author)
%%
%%   - the product is a LaTeX class or package that includes multicol
%%
%%
%%   There is no moral obligation in case
%%
%%   - the product is a document but producer has not directed
%%     the author to include multicol (in that case the moral obligation
%%     lies with the author of the document)
%%
%%   - the product does not involve typesetting, e.g., consists, for
%%     example, of distributing multicol and its documentation.
%%
%%   - the product is not proprietary, i.e., is made available as free
%%     software itself (which doesn't prohibit its commercial marketing)
%%
%%   - multicol is used for non-commercial purposes
%%
%%
%% Determinating a license fee might result in a license fee of zero
%% (i.e., no payment) in case a producer has determined that the use
%% of multicol has no enhancing effect on the product. This is a
%% plausible scenario, i.e., in the above two cases the producer is
%% only asked to evaluate the value of multicol for the product
%% not for the payment of a license fee per se (which might or might
%% not follow from this evaluation).
%%
%% The license fee, if any, can be payed either to the LaTeX3 fund
%% (see ltx3info.txt in the base LaTeX distribution) or to the author of
%% the program who can be contacted at
%%
%%     Frank.Mittelbach@latex-project.org
%%
\NeedsTeXFormat{LaTeX2e}[2020/10/01]
\ProvidesPackage{framedmulticol}
[2024/02/01 v0.2 add frame for multicolumn text]
\RequirePackage{multicol}
\RequirePackage{ctexpatch}
\ExplSyntaxOn 
\dim_if_exist:NF \@tempdimd { \dim_new:N \@tempdimd }
\cs_if_exist:NF \IfPageOdd
  {
    \cs_new:Npn \IfPageOdd 
      { 
        \if_int_odd:w \c@page \exp_after:wN \use_i:nn 
        \else: \exp_after:wN \use_ii:nn 
        \fi: 
      }
  }
%% patch multicol
\cs_new_protected:Npn \fmulticol@update@framedgeometry #1 { }
\cs_new_protected:Npn \fmulticol@update@height #1 { }
\cs_new_protected:Npn \fmulticol@update@width #1 { }
\cs_new_protected:Npn \fmulticol@update@box #1 {#1}
\cs_new_protected:Npn \fmulticol@update@boxfirst { }
\cs_new_protected:Npn \fmulticol@update@boxmiddle { }
\cs_new_protected:Npn \fmulticol@update@boxlast { }
\cs_new_protected:Npn \fmulticol@update@boxes #1#2 { }
\cs_new_protected:Npn \fmulticol@update@rule 
  { \columnseprulecolor\vrule\@width\columnseprule }
\cs_new_eq:NN \fmulticol@drawrule \fmulticol_draw_rule:nnnn 
\cs_new_protected:Npn \fmulticol@swapcolumninevenpages #1#2#3
  {
    \ifodd\fmulticol@swapcolumn 
      \if@twoside 
        \ifodd\c@page #3
        \else \ifx#3#1 #2\else #1\fi 
        \fi 
      \else #3
      \fi 
    \else #3
    \fi 
  }
\cs_set_eq:NN \fmulticol@update@boxes \fmulticol@swapcolumninevenpages 
%% see multicolrule.sty
\dim_new:N \l__fmulticol_tmpa_dim 
\dim_new:N \l__fmulticol_rule_extend_top_dim
\dim_new:N \l__fmulticol_rule_extend_bot_dim
\cs_new_protected:Npn \fmulticol@rule 
  { 
    \dim_set:Nn \l__fmulticol_tmpa_dim 
      {
        \box_ht:N \mult@rightbox + % height
        \dim_max:nn {\dimen\tw@} {\box_dp:N \mult@rightbox} + % depth
        \dim_max:nn {\box_ht:N \mult@nat@firstbox - \box_ht:N \mult@rightbox} {0pt} % overflow
      }
    \box_move_down:nn 
      { \l__fmulticol_tmpa_dim - \box_ht:N \mult@rightbox }
      {
        \vbox_to_ht:nn \l__fmulticol_tmpa_dim 
          {
            \tex_vss:D
            \hbox:n
              {
                \use:e 
                  {
                    \exp_not:N \fmulticol@drawrule 
                      { \dim_use:N \columnseprule } 
                      { \dim_eval:n { \l__fmulticol_tmpa_dim + \l__fmulticol_rule_extend_top_dim + \l__fmulticol_rule_extend_bot_dim } } 
                      { \dim_use:N \c_zero_dim } 
                      { \exp_not:N \columnseprulecolor } 
                  }
              }
            \tex_vss:D 
          }
      }
  }
\dim_new:N \fmulticol@extra@height 
\dim_new:N \fmulticol@extra@width 
\ctex_patch_cmd:Nnn \page@sofar 
  { \hbox to\full@width { \mc@align@columns \rlap{ \phantom \multicolmindepthstring } } }
  { 
    \fmulticol@update@box 
      {
        \hbox to\full@width 
          { \fmulticol@update@boxes\LR@column@boxes\RL@column@boxes\mc@align@columns 
            \rlap{ \phantom \multicolmindepthstring } }
      }
  }
\ctex_patch_cmd:Nnn \prepare@multicols { \hsize\linewidth }
  {
    \advance\linewidth-\fmulticol@extra@width 
    \hsize\linewidth
  }
\ctex_patch_cmd:Nnn \prepare@multicols 
  { \set@mult@vsize\relax }
  { \fmulticol@update@boxfirst \set@mult@vsize\relax }
\ctex_patch_cmd:Nnn \endmulticols 
  { \par } { \par \fmulticol@update@boxlast }
\ctex_patch_cmd:Nnn \multi@column@out { \dimen@\@colroom }
  {
    \advance\@colroom-\fmulticol@extra@height 
    \dimen@\@colroom 
  }
\cs_set_eq:NN \fmulticol@LR@column@boxes \LR@column@boxes
\cs_set_eq:NN \fmulticol@RL@column@boxes \RL@column@boxes
\ctex_patch_cmd:Nnn \LR@column@boxes 
  { \columnseprulecolor\vrule\@width\columnseprule }
  { \fmulticol@update@rule }
\ctex_patch_cmd:Nnn \RL@column@boxes 
  { \columnseprulecolor\vrule\@width\columnseprule }
  { \fmulticol@update@rule }
\cs_set_eq:NN \mc@align@columns \LR@column@boxes 
\hook_gput_code:nnn { package/multicolrule/before } { fmulticol }
  {
    \cs_set_eq:NN \LR@column@boxes \fmulticol@LR@column@boxes
    \cs_set_eq:NN \RL@column@boxes \fmulticol@RL@column@boxes
  }
\RequirePackage {adjmulticol}
\ctex_patch_cmd:Nnn \adjmc@page@sofar
  { \ifodd\c@page } { \iftrue \fmulticol@adjmc@ifoddpage }
\cs_new:Npn \fmulticol@adjmc@ifoddpage #1\else #2\fi
  { 
    \fi
    \legacy_if:nTF { @boxedmulticols } 
      { \IfPageOdd{#1}{#2} } { \ifodd\c@page#1\else#2\fi }
  }
\tl_new:N \l__fmulticol_adj_inner_tl 
\tl_new:N \l__fmulticol_adj_outer_tl 
%%end-of patch 
\cs_new_protected:Npn \fmulticolsetup { \keys_set:nn { fmulticol } }
\keys_define:nn { fmulticol } 
  {
    columns .code:n = \tl_set:Nx \l__fmulticol_cols_tl { \int_eval:n {#1} } ,
    columns .initial:n = 2 ,
    cols .meta:n = { columns = {#1} } ,
    first-minimal .dim_set:N = \premulticols ,
    last-minimal .dim_set:N = \postmulticols ,
    outer-skip .skip_set:N = \multicolsep ,
    outer-sep .meta:n = { outer-skip = {#1} } ,
    column-sep .dim_set:N = \columnsep ,
    sep .meta:n = { column-sep = {#1} } ,
    heading .tl_set:N = \l__fmulticol_heading_tl ,
    rule-width .dim_set:N = \columnseprule ,
    rule-color .code:n = 
      \tl_set:Nx \columnseprulecolor { \__fmulticol_color_select:n {#1} } ,
    ragged .code:n = \raggedcolumns ,
    ragged .value_forbidden:n = true ,
    not-aligned .meta:n = { ragged } ,
    not-aligned .value_forbidden:n = true ,
    flush .code:n = \flushcolumns ,
    flush .value_forbidden:n = true ,
    aligned .meta:n = { flush } ,
    aligned .value_forbidden:n = true ,
    balanced .bool_set:N = \l__fmulticol_balanced_bool ,
    balanced .initial:n = true ,
    not-balanced .code:n = \bool_set_false:N \l__fmulticol_balanced_bool ,
    not-balanced .value_forbidden:n = true ,
    columns* .meta:n = { not-balanced , columns = {#1} } ,
    cols*    .meta:n = { columns* = {#1} } ,

    % hook point 
    before .tl_set:N = \l__fmulticol_before_tl ,
    after  .tl_set:N = \l__fmulticol_after_tl  ,
    begin  .tl_set:N = \l__fmulticol_begin_tl  ,
    end    .tl_set:N = \l__fmulticol_end_tl    ,

    enable-swap-column .code:n = 
      \cs_set_eq:NN \fmulticol@update@boxes \fmulticol@swapcolumninevenpages ,
    enable-swap-column .value_forbidden:n = true ,
    disable-swap-column .code:n = \cs_set_eq:NN \fmulticol@update@boxes \use_none:nn ,
    disable-swap-column .value_forbidden:n = true ,
    swap-column .bool_set:N = \fmulticol@swapcolumn ,

    adj .bool_set:N = \l__fmulticol_adj_bool ,
    adj-inner .code:n = \bool_set_true:N \l__fmulticol_adj_bool 
      \tl_set:Nx \l__fmulticol_adj_inner_tl { \dim_eval:n {#1} } ,
    adj-outer .code:n = \bool_set_true:N \l__fmulticol_adj_bool 
      \tl_set:Nx \l__fmulticol_adj_outer_tl { \dim_eval:n {#1} } ,
    adj*      .meta:n = { adj , not-balanced } ,
    _adj      .code:n = \__fmulticol_adj:Nnnn #1 ,
    shorten   .code:n = \bool_set_true:N \l__fmulticol_adj_bool
      \__fmulticol_adj:Nnnn + {#1} { 0pt } { 0pt } ,
    widen     .code:n = \bool_set_true:N \l__fmulticol_adj_bool 
      \__fmulticol_adj:Nnnn - {#1} { 0pt } { 0pt } ,

    wrap-box .bool_set:N = \l__fmulticol_wrap_box_bool ,

    framed .choice: ,
    framed-options  .clist_set:N = \fmulticol@framed@options ,
    framed-options+ .code:n = \clist_put_right:Nn \fmulticol@framed@options {#1} ,
    rule-top .dim_set:N = \l__fmulticol_rule_extend_top_dim ,
    rule-bottom .dim_set:N = \l__fmulticol_rule_extend_bot_dim ,

    % be careful to use
    addto-baselineskip .dim_set:N = \multicolbaselineskip ,
    tolerance .int_set:N = \multicoltolerance , % 9999
    pretolerance .int_set:N = \multicolpretolerance ,
    collectmore .int_set:N = \c@collectmore ,
    minrows .int_set:N = \c@minrows , % 1
    unbalance .int_set:N = \c@unbalance ,
    column-badness .int_set:N = \c@columnbadness ,
    final-column-badness .int_set:N = \c@finalcolumnbadness , % 9999
    top-fuzz .dim_set:N = \multicolovershoot , % 0pt 
    bottom-fuzz .dim_set:N = \multicolundershoot , % 2pt 
    bot-fuzz .meta:n = { bottom-fuzz = {#1} } ,
    v-fuzz .meta:n = { top-fuzz = {#1} , bottom-fuzz = {#1} } ,
    h-fuzz .dim_set:N = \tex_hfuzz:D ,
    overflow .dim_set:N = \maxbalancingoverflow , % 12pt 
    right-to-left .code:n = \RLmulticolcolumns ,
    right-to-left .value_forbidden:n = true ,
    RL .meta:n = { right-to-left } ,
    RL .value_forbidden:n = true ,
    left-to-right .code:n = \LRmulticolcolumns ,
    left-to-right .value_forbidden:n = true ,
    LR .meta:n = { left-to-right } ,
    LR .value_forbidden:n = true ,

    unknown .code:n = 
      { 
        \exp_args:Nf \__fmulticol_if_head_int:nTF { \l_keys_key_str } 
          { \tl_set:Nx \l__fmulticol_cols_tl { \int_eval:n { \l_keys_key_str } } } 
          { \msg_error:nnx { fmulticol } { unknown-key } { \l_keys_key_str } }
      } ,
  }
\cs_new_nopar:Npn \__fmulticol_color_select:n #1
  {
    \tl_if_head_eq_meaning:nNTF {#1} [ % ]
      { \__fmulticol_color_select_aux:w #1 \scan_stop: }
      { \tl_if_blank:nF {#1} { \exp_not:N \color {#1} } }
  }
\cs_new:Npn \__fmulticol_color_select_aux:w [#1] #2 \scan_stop:
  { \exp_not:N \color [#1] {#2} }
\cs_new:Npn \__fmulticol_if_head_int:nTF #1
  {
    \if_case:w 0 \if_case:w 1#1 \or:\or:\or:\or:\or:\or:\or:\or:\or:\else: 1\fi: \exp_stop_f:
      \exp_after:wN \use_ii:nn
    \else:
      \exp_after:wN \use_i:nn
    \fi:
  }
\cs_new:Npn \__fmulticol_adj:Nnnn #1#2#3#4
  {
    \tl_if_blank:nTF {#2}
      {
        \__kernel_tl_set:Nx \l__fmulticol_adj_inner_tl { #1 \dim_eval:n {#3} }
        \__kernel_tl_set:Nx \l__fmulticol_adj_outer_tl { #1 \dim_eval:n {#4} }
      }
      {
        \seq_set_split:Nnn \l__fmulticol_tmp_seq { , } {#2}
        \int_compare:nNnTF { \seq_count:N \l__fmulticol_tmp_seq } = 1
          {
            \seq_pop_left:NN \l__fmulticol_tmp_seq \l__fmulticol_adj_inner_tl
            \tl_set:Nx \l__fmulticol_adj_outer_tl
              { #1 \dim_eval:n { \l__fmulticol_adj_inner_tl + #4 } }
            \__kernel_tl_set:Nx \l__fmulticol_adj_inner_tl
              { #1 \dim_eval:n { \l__fmulticol_adj_inner_tl + #3 } }
          }
          {
            \seq_pop_left:NN \l__fmulticol_tmp_seq \l__fmulticol_adj_inner_tl
            \__kernel_tl_set:Nx \l__fmulticol_adj_inner_tl 
              { #1 \dim_eval:n { \l__fmulticol_adj_inner_tl + #3 } }
            \seq_pop_left:NN \l__fmulticol_tmp_seq \l__fmulticol_adj_outer_tl
            \__kernel_tl_set:Nx \l__fmulticol_adj_outer_tl 
              { #1 \dim_eval:n { \l__fmulticol_adj_outer_tl + #4 } }
          }
      }
  }
\msg_new:nnn { fmulticol } { unknown-key }
  { The~key~`#1'~is~unknown~and~is~being~ignored. }
\cs_new_protected:Npn \__fmulticol_process_framedoptions: 
  {
    \hbox_set:Nn \c_zero_int % we never use it 
      { 
        %\setbox0\fmulticol@update@box{}
        %\global\fmulticol@extra@height=\dimexpr\ht0+\dp0\relax 
        %\global\fmulticol@extra@width=\wd0
        \exp_args:No \fmulticol@update@framedgeometry { \fmulticol@framed@options } 
        \fmulticol@update@height\fmulticol@extra@height 
        \fmulticol@update@width\fmulticol@extra@width 
        \tl_gset:Nx \g__fmulticol_tmpa_tl 
          {
            \dim_set:Nn \fmulticol@extra@height { \the\fmulticol@extra@height }
            \dim_set:Nn \fmulticol@extra@width  { \the\fmulticol@extra@width  }
          }
      }
    \g__fmulticol_tmpa_tl
  }
\cs_new_protected:Npn \fmulticolremove 
  {
    \cs_set_protected:Npn \fmulticol@update@framedgeometry ##1 { }
    \cs_set_protected:Npn \fmulticol@update@height ##1 { }
    \cs_set_protected:Npn \fmulticol@update@width ##1 { }
    \cs_set_protected:Npn \fmulticol@update@box ##1 {##1}
    \dim_zero:N \fmulticol@extra@height
    \dim_zero:N \fmulticol@extra@width 
  }
\keys_define:nn { fmulticol }
  {
    framed / none .code:n = \fmulticolremove ,
    framed / fbox .code:n = 
      {
        \cs_set_protected:Npn \fmulticol@update@height ##1
          { ##1=\dimexpr2\fboxrule+2\fboxsep\relax }
        \cs_set_eq:NN \fmulticol@update@width \fmulticol@update@height 
        \cs_set_protected:Npn \fmulticol@update@box ##1 
          { \hbox{ \exp_args:No\fmulticol@update@framedgeometry{\fmulticol@framed@options} \fbox{##1}} }
        \cs_set_protected:Npn \fmulticol@update@framedgeometry ##1 
          { \keyval_parse:nnn \use_none:n \__fmulticol_set_fbox_geometry:nn {##1} }
      } ,
    env-no-framed .code:n = \__fmulticol_env_remove: ,
    env-framed .code:n = \__fmulticol_env_set: ,
  }
\cs_new_protected:Npn \__fmulticol_env_remove:
  {
    \clist_map_inline:nn { multicols, adjmulticols, adjmulticols* }
      { \hook_gput_code:nnn { env/##1/begin } { fmulticol } { \fmulticolremove } }
  }
\cs_new_protected:Npn \__fmulticol_env_set:
  {
    \clist_map_inline:nn { multicols, adjmulticols, adjmulticols* }
      { \hook_gremove_code:nn { env/##1/begin } { fmulticol } }
  }
\cs_new_protected:Npn \__fmulticol_set_fbox_geometry:nn #1#2
  {
    \str_case:nn {#1}
      {
        { sep }  { \dim_set:Nn \fboxsep {#2} }
        { rule } { \dim_set:Nn \fboxrule {#2} }
        { border } { \dim_set:Nn \fboxrule {#2} }
        { border-width } { \dim_set:Nn \fboxrule {#2} }
        { padding } { \dim_set:Nn \fboxsep {#2} }
      }
  }
\cs_new_protected_nopar:Npn \fmulticol@startmulticolumns { \multicols }
\cs_new_protected_nopar:Npn \fmulticol@stopmulticolumns  { \endmulticols }
\NewDocumentCommand \startmulticolumns { +O{} }
  {
    \l__fmulticol_before_tl
    \group_begin:
    \cs_if_exist:NT \@captype { \bool_set_true:N \l__fmulticol_wrap_box_bool }
    \keys_set:nn { fmulticol } {#1}
    \__fmulticol_process_framedoptions: 
    \int_compare:nNnTF \l__fmulticol_cols_tl < 2
      { 
        \bool_if:NTF \l__fmulticol_adj_bool 
          {
            \cs_set:Npx \fmulticol@startmulticolumns 
              { 
                \exp_not:c 
                  { adjmulticols \bool_if:NF \l__fmulticol_balanced_bool * }
                  { 1 } 
                  { \l__fmulticol_adj_inner_tl }
                  { \l__fmulticol_adj_outer_tl }
                  [ \exp_not:N \l__fmulticol_heading_tl ]
              }
            \cs_set:Npx \fmulticol@stopmulticolumns 
              {
                \tl_set:Nn \exp_not:N \@currenvir { adjmulticols }
                \exp_not:c
                  { endadjmulticols \bool_if:NF \l__fmulticol_balanced_bool * }
              }
          }
          {
            \cs_set:Npn \fmulticol@startmulticolumns { \l__fmulticol_heading_tl }
            \cs_set_eq:NN \fmulticol@stopmulticolumns \prg_do_nothing: 
          }
      }
      {
        \bool_if:NTF \l__fmulticol_adj_bool 
          {
            \cs_set:Npx \fmulticol@startmulticolumns 
              {
                \exp_not:c
                  { adjmulticols \bool_if:NF \l__fmulticol_balanced_bool * }
                  { \l__fmulticol_cols_tl }
                  { \l__fmulticol_adj_inner_tl }
                  { \l__fmulticol_adj_outer_tl }
                  [ \exp_not:N \l__fmulticol_heading_tl ]
              }
            \cs_set:Npx \fmulticol@stopmulticolumns 
              {
                \tl_set:Nn \exp_not:N \@currenvir { adjmulticols }
                \exp_not:c
                  { endadjmulticols \bool_if:NF \l__fmulticol_balanced_bool * }
              }
          }
          {
            \cs_set:Npx \fmulticol@startmulticolumns 
              {
                \tl_set:Nn \exp_not:N \@currenvir { multicols }
                \exp_not:c
                  { multicols \bool_if:NF \l__fmulticol_balanced_bool * }
                  { \l__fmulticol_cols_tl }
                  [ \exp_not:N \l__fmulticol_heading_tl ]
              }
            \cs_set:Npx \fmulticol@stopmulticolumns 
              {
                \tl_set:Nn \exp_not:N \@currenvir { multicols }
                \exp_not:c
                  { endmulticols \bool_if:NF \l__fmulticol_balanced_bool * }
              }
          }
      }
    \bool_lazy_and:nnT { \bool_if_p:N \l__fmulticol_adj_bool }
      { \bool_if_p:N \l__fmulticol_wrap_box_bool }
      {
        \tl_put_left:Nx \fmulticol@startmulticolumns
          { \hbox to\linewidth\bgroup\vbox\bgroup\hsize\linewidth }
        \tl_put_right:Nx \fmulticol@stopmulticolumns
          { \egroup\hss\egroup }
      }
    \fmulticol@startmulticolumns \relax 
    \l__fmulticol_begin_tl
  }
\cs_new_protected_nopar:Npn \stopmulticolumns 
  { 
    \l__fmulticol_end_tl 
    \fmulticol@stopmulticolumns 
    \group_end: 
    \l__fmulticol_after_tl 
  }
\fmulticolsetup { env-no-framed }
%% longfbox 
\protected\def\fmulticol@lfbox@height{\dimexpr
  (\dimexpr(\option{/fbox/padding-top}+\option{/fbox/padding-bottom}+
    \option{/fbox/border-top-width}+\option{/fbox/border-bottom-width})\relax)}
\protected\def\fmulticol@lfbox@width{\dimexpr
  (\option{/fbox/padding-left}+\option{/fbox/padding-right}
    +\option{/fbox/border-left-width}+\option{/fbox/border-right-width})\relax}
\keys_define:nn { fmulticol }
  {
    framed / lfbox .code:n = 
      {
        \cs_set_protected:Npn \fmulticol@update@height ##1
          { ##1=\fmulticol@lfbox@height }
        \cs_set_protected:Npn \fmulticol@update@width ##1
          { ##1=\fmulticol@lfbox@width }
        \cs_set_protected:Npn \fmulticol@update@box ##1 
          { \hbox { \exp_args:NNo \lfbox [ \fmulticol@framed@options ] {##1} } }
        \cs_set_protected:Npn \fmulticol@update@framedgeometry { \fboxset }
      }
  }


%% tcolorbox 
\protected\def\fmulticol@tcb@height{\dimexpr(\kvtcb@boxsep+\kvtcb@boxsep)+
  (\kvtcb@top@rule@stand)+(\kvtcb@bottom@rule@stand)+(\kvtcb@top)+(\kvtcb@bottom)\relax}
\protected\def\fmulticol@tcb@width{\dimexpr(\kvtcb@boxsep+\kvtcb@boxsep)+
  (\kvtcb@left@rule)+(\kvtcb@right@rule)+(\kvtcb@leftupper)+(\kvtcb@rightupper)\relax}
\keys_define:nn { fmulticol }
  {
    framed / tcbox .code:n = 
      {
        \cs_set_protected:Npn \fmulticol@update@height ##1 { ##1=\fmulticol@tcb@height }
        \cs_set_protected:Npn \fmulticol@update@width ##1 { ##1=\fmulticol@tcb@width }
        \cs_set_protected:Npn \fmulticol@update@box ##1 
          { \hbox { \exp_args:NNo \tcbox [ \fmulticol@framed@options ] {##1} } }
        \cs_set_protected:Npn \fmulticol@update@framedgeometry { \tcbset }
      } ,
  }

\ExplSyntaxOff