Keep a key locally passed from multicols to enumitem using xparse












1















I have a small problem when trying to keep a key=val locally defining using xparse to pass multicols to enumerate (enumitem package). I have redefined the environment enumerate to accept the columns=number and created commands keyans[...], answer{...} and showanskey[...]{...}{...}[...] to save the multiple choice keys and answers for worksheet exercise , all well except that when activate the columns in the first level of enumerate, affects all the levels nested in it.



When using columns=2 in the first level it looks like this:



current result



all nested environments are in two columns.



I hope is that the output is something like this:



expected result



I tried to put group_begin: and group_end: in different places but I only get errors. The code is adapted from Defining a list environment with multiple optional arguments and MWE:



% arara: pdflatex
% arara: clean: { extensions: [ aux, log] }
documentclass{article}
usepackage{letltxmacro,enumitem,multicol,xparse}
usepackage[most]{tcolorbox}
usepackage[margin=0.6in,noheadfoot,papersize={8.5in,13in}]{geometry} % for mwe
setlength{parindent}{0pt}
pagestyle{empty}

% Set keys for save-ans and save-key in enumitem
SetEnumitemKey{save-ans}{before={storecurrentid{#1}begin{saveanswer}{#1}},after=end{saveanswer}}%
SetEnumitemKey{save-key}{before={storecurrentid{#1}begin{savekeyans}{#1}},after=end{savekeyans}}%

% Save a copy enumerate
LetLtxMacrooldenumenumerate
LetLtxMacrooldendenumendenumerate

% Redefine enumerate for multicols
ExplSyntaxOn
RenewDocumentEnvironment{enumerate}{ O{} }
{
tl_clear:N l_keyanswer_enumitem_tl
keys_set:nn { keyanswer } { #1 }
int_compare:nT { l_keyanswer_columns_tl > 1 }
{
setlength{multicolsep}{5.0pt plus 2.0pt minus 1.5pt}
begin{multicols}{ l_keyanswer_columns_tl }
}
keyanswer_beginenum:V l_keyanswer_enumitem_tl
}
{
oldendenum
int_compare:nT { l_keyanswer_columns_tl > 1 }
{ end{multicols} }
}
cs_new_protected:Npn keyanswer_beginenum:n #1
{ oldenum[#1] }

cs_generate_variant:Nn keyanswer_beginenum:n {V}

tl_new:N l_keyanswer_columns_tl
tl_new:N l_keyanswer_enumitem_tl

keys_define:nn { keyanswer }
{
columns .tl_set:N = l_keyanswer_columns_tl,
columns .initial:n = 1,
unknown .code:n = tl_put_right:Nx l_keyanswer_enumitem_tl
{ l_keys_key_tl tl_if_empty:nF { #1 } { = exp_not:n { #1 } } , },
}

% Implementation to save answer{...} and keyans[...] in lists
prop_new:N g_keyanswer_admin_prop

cs_new:Npn storecurrentid #1{%
prop_gput:Nnn g_keyanswer_admin_prop {current-id} {#1}
}
cs_new:Npn retrievecurrentid {%
prop_item:Nn g_keyanswer_admin_prop {current-id}
}

% environments for save answer{...} and keyans[...]
NewDocumentEnvironment{saveanswer}{ m }{%
setlist[enumerate,2]{leftmargin=16pt,nosep,itemsep=0pt,label=(alph*),before={stepdownlevel},after={stepuplevel}}%
setlist[enumerate,3]{leftmargin=20pt,nosep,itemsep=0pt,label=Roman*.,before={stepdownlevel},after={stepuplevel}}%
seq_if_exist:cF { l_keyanswer_data_#1_seq }{ seq_new:c { l_keyanswer_data_#1_seq }}
}{ leavevmode }

NewDocumentEnvironment{savekeyans}{ m }{%
setlist[enumerate,1]{left=0pt,labelsep=5pt,itemsep=1pt,label=arabic*.}%
setlist[enumerate,2]{leftmargin=16pt,nosep,label=Alph*)}%
seq_if_exist:cF { l_keyanswer_data_#1_seq }{%
seq_new:c { l_keyanswer_data_#1_seq }}}{ leavevmode }

% commands answer{...} and keyans[...]
NewDocumentCommand{answer}{ +m }{%
seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}
par%
}

NewDocumentCommandkeyans{ !o }{%
IfNoValueTF{#1}{%
tl_set:Nn l_tmpa_tl {protectitem}%
tl_put_right:Nx l_tmpa_tl {protectspace Alph{enumii}}%
seq_gput_right:cV { l_keyanswer_data_ retrievecurrentid _seq }{ l_tmpa_tl}%
par%
}{%
seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}%
par%
}%
}%

% stepdownlevel and stepuplevel for save in nested enumerate
newcommand{stepdownlevel}{%
seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {item begin{enumerate}}
}
newcommand{stepuplevel}{%
seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {end{enumerate}}
}

% Display answer{...} and keyans[...] in list by id
cs_new:Npn displayseqcontent #1#2 {%
seq_if_empty:cF { l_keyanswer_data_#1_seq } {%
seq_log:c { l_keyanswer_data_#1_seq }
setlist[enumerate,1]{labelsep=5pt,label=arabic*.,leftmargin=15pt,labelsep=3pt,font=footnotesize,nosep,widest=80}%
setlist[enumerate,2]{font=footnotesize,labelsep=5pt,leftmargin=0.6cm,nosep,label=(alph*)}%
setlist[enumerate,3]{font=footnotesize,labelsep=5pt,leftmargin=0.3cm,nosep,label=Roman*.}%
begin{enumerate}[#2] smallsetlength{columnsep}{0pt}
seq_map_inline:cn { l_keyanswer_data_#1_seq } { ##1 }
end{enumerate}
}
}
ExplSyntaxOff

% showanskey[tcolorbox]{title}{list ref}[columns]
DeclareTotalTColorBox{showanskey}{O{} m m O{4}}
{ colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=columnwidth,title filled,%
fontupper=small,fonttitle=smallsffamily, adjusted title={#2},center title,#1}
{ displayseqcontent{#3}{columns=#4} }%

begin{document}

section{Multiple Choice}

begin{enumerate}[save-key=mchoice,left=0pt,columns=2]
item First type of questions
begin{enumerate}
item value
item value
item value
item correct keyans
item value
end{enumerate}
item Second type of questions
begin{enumerate}[leftmargin=2pc,label=Roman*.]
item $2alpha+2delta=90^{circ}$
item $alpha=delta$
item $angle EDF=45^{circ}$
end{enumerate}
begin{enumerate}[columns=2]%
item I only
item II only keyans
item I and II only
item I and III only
item I, II, and III
end{enumerate}
%columnbreak %
item Third type of questions
begin{enumerate}[leftmargin=2pc,label=(arabic*)]
item $2alpha+2delta=90^{circ}$
item $angle EDF=45^{circ}$
end{enumerate}
begin{enumerate}
item Altenativa A
item Altenativa B
item Altenativa C keyans
item Altenativa D
item Altenativa E
end{enumerate}
item Fourth type of question, a problem with numerical response keyans[$sqrt{2}$]

end{enumerate}

section{Worksheet}

begin{enumerate}[save-ans=Worksheet,left=0pt,labelsep=5pt,nosep,label=arabic*.,columns=2]
item Factor $x^{2}-2x+1$ answer{$left(x-1right)^{2}$}
item Factor $3x+3y+3z$ answer{$3(x+y+z)$}
item True False
begin{enumerate}
item $alpha > delta$ answer{False}
item LaTeX2e is cool? answer{Very True!}
end{enumerate}
item Related to Linux
begin{enumerate}
item You use linux? answer{Yes}
item Usually uses the package manager? answer{Yes}
item Rate the following package managers
begin{enumerate}
item dnf answer{good}
item apt answer{very good}
item yum answer{obsolete}
end{enumerate}
end{enumerate}
end{enumerate}

section{Answers}
showanskey[colback=yellow!30!white]{Multiple Choice Keys}{mchoice}[5]
showanskey[colback=yellow!30!white]{Solution Worksheet}{Worksheet}[2]

section{Normal enumerate}
begin{enumerate}
item First level
begin{enumerate}
item Second level
item value
item begin{enumerate}
item Third level
item value
end{enumerate}
end{enumerate}
end{enumerate}

end{document}


If put in all sublevels columns=1 skip the problem, but, can't do this with showanskey. If instead of using RenewDocumentEnvironment{enumerate} I use directly



SetEnumitemKey{columns}{before=begin{multicols}{#1},after=end{multicols}}%


I get the following error:



! LaTeX3 Error: Variable l_keyanswer_data_mchoice_seq undefined.


How can i fix this?



Grateful










share|improve this question





























    1















    I have a small problem when trying to keep a key=val locally defining using xparse to pass multicols to enumerate (enumitem package). I have redefined the environment enumerate to accept the columns=number and created commands keyans[...], answer{...} and showanskey[...]{...}{...}[...] to save the multiple choice keys and answers for worksheet exercise , all well except that when activate the columns in the first level of enumerate, affects all the levels nested in it.



    When using columns=2 in the first level it looks like this:



    current result



    all nested environments are in two columns.



    I hope is that the output is something like this:



    expected result



    I tried to put group_begin: and group_end: in different places but I only get errors. The code is adapted from Defining a list environment with multiple optional arguments and MWE:



    % arara: pdflatex
    % arara: clean: { extensions: [ aux, log] }
    documentclass{article}
    usepackage{letltxmacro,enumitem,multicol,xparse}
    usepackage[most]{tcolorbox}
    usepackage[margin=0.6in,noheadfoot,papersize={8.5in,13in}]{geometry} % for mwe
    setlength{parindent}{0pt}
    pagestyle{empty}

    % Set keys for save-ans and save-key in enumitem
    SetEnumitemKey{save-ans}{before={storecurrentid{#1}begin{saveanswer}{#1}},after=end{saveanswer}}%
    SetEnumitemKey{save-key}{before={storecurrentid{#1}begin{savekeyans}{#1}},after=end{savekeyans}}%

    % Save a copy enumerate
    LetLtxMacrooldenumenumerate
    LetLtxMacrooldendenumendenumerate

    % Redefine enumerate for multicols
    ExplSyntaxOn
    RenewDocumentEnvironment{enumerate}{ O{} }
    {
    tl_clear:N l_keyanswer_enumitem_tl
    keys_set:nn { keyanswer } { #1 }
    int_compare:nT { l_keyanswer_columns_tl > 1 }
    {
    setlength{multicolsep}{5.0pt plus 2.0pt minus 1.5pt}
    begin{multicols}{ l_keyanswer_columns_tl }
    }
    keyanswer_beginenum:V l_keyanswer_enumitem_tl
    }
    {
    oldendenum
    int_compare:nT { l_keyanswer_columns_tl > 1 }
    { end{multicols} }
    }
    cs_new_protected:Npn keyanswer_beginenum:n #1
    { oldenum[#1] }

    cs_generate_variant:Nn keyanswer_beginenum:n {V}

    tl_new:N l_keyanswer_columns_tl
    tl_new:N l_keyanswer_enumitem_tl

    keys_define:nn { keyanswer }
    {
    columns .tl_set:N = l_keyanswer_columns_tl,
    columns .initial:n = 1,
    unknown .code:n = tl_put_right:Nx l_keyanswer_enumitem_tl
    { l_keys_key_tl tl_if_empty:nF { #1 } { = exp_not:n { #1 } } , },
    }

    % Implementation to save answer{...} and keyans[...] in lists
    prop_new:N g_keyanswer_admin_prop

    cs_new:Npn storecurrentid #1{%
    prop_gput:Nnn g_keyanswer_admin_prop {current-id} {#1}
    }
    cs_new:Npn retrievecurrentid {%
    prop_item:Nn g_keyanswer_admin_prop {current-id}
    }

    % environments for save answer{...} and keyans[...]
    NewDocumentEnvironment{saveanswer}{ m }{%
    setlist[enumerate,2]{leftmargin=16pt,nosep,itemsep=0pt,label=(alph*),before={stepdownlevel},after={stepuplevel}}%
    setlist[enumerate,3]{leftmargin=20pt,nosep,itemsep=0pt,label=Roman*.,before={stepdownlevel},after={stepuplevel}}%
    seq_if_exist:cF { l_keyanswer_data_#1_seq }{ seq_new:c { l_keyanswer_data_#1_seq }}
    }{ leavevmode }

    NewDocumentEnvironment{savekeyans}{ m }{%
    setlist[enumerate,1]{left=0pt,labelsep=5pt,itemsep=1pt,label=arabic*.}%
    setlist[enumerate,2]{leftmargin=16pt,nosep,label=Alph*)}%
    seq_if_exist:cF { l_keyanswer_data_#1_seq }{%
    seq_new:c { l_keyanswer_data_#1_seq }}}{ leavevmode }

    % commands answer{...} and keyans[...]
    NewDocumentCommand{answer}{ +m }{%
    seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}
    par%
    }

    NewDocumentCommandkeyans{ !o }{%
    IfNoValueTF{#1}{%
    tl_set:Nn l_tmpa_tl {protectitem}%
    tl_put_right:Nx l_tmpa_tl {protectspace Alph{enumii}}%
    seq_gput_right:cV { l_keyanswer_data_ retrievecurrentid _seq }{ l_tmpa_tl}%
    par%
    }{%
    seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}%
    par%
    }%
    }%

    % stepdownlevel and stepuplevel for save in nested enumerate
    newcommand{stepdownlevel}{%
    seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {item begin{enumerate}}
    }
    newcommand{stepuplevel}{%
    seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {end{enumerate}}
    }

    % Display answer{...} and keyans[...] in list by id
    cs_new:Npn displayseqcontent #1#2 {%
    seq_if_empty:cF { l_keyanswer_data_#1_seq } {%
    seq_log:c { l_keyanswer_data_#1_seq }
    setlist[enumerate,1]{labelsep=5pt,label=arabic*.,leftmargin=15pt,labelsep=3pt,font=footnotesize,nosep,widest=80}%
    setlist[enumerate,2]{font=footnotesize,labelsep=5pt,leftmargin=0.6cm,nosep,label=(alph*)}%
    setlist[enumerate,3]{font=footnotesize,labelsep=5pt,leftmargin=0.3cm,nosep,label=Roman*.}%
    begin{enumerate}[#2] smallsetlength{columnsep}{0pt}
    seq_map_inline:cn { l_keyanswer_data_#1_seq } { ##1 }
    end{enumerate}
    }
    }
    ExplSyntaxOff

    % showanskey[tcolorbox]{title}{list ref}[columns]
    DeclareTotalTColorBox{showanskey}{O{} m m O{4}}
    { colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=columnwidth,title filled,%
    fontupper=small,fonttitle=smallsffamily, adjusted title={#2},center title,#1}
    { displayseqcontent{#3}{columns=#4} }%

    begin{document}

    section{Multiple Choice}

    begin{enumerate}[save-key=mchoice,left=0pt,columns=2]
    item First type of questions
    begin{enumerate}
    item value
    item value
    item value
    item correct keyans
    item value
    end{enumerate}
    item Second type of questions
    begin{enumerate}[leftmargin=2pc,label=Roman*.]
    item $2alpha+2delta=90^{circ}$
    item $alpha=delta$
    item $angle EDF=45^{circ}$
    end{enumerate}
    begin{enumerate}[columns=2]%
    item I only
    item II only keyans
    item I and II only
    item I and III only
    item I, II, and III
    end{enumerate}
    %columnbreak %
    item Third type of questions
    begin{enumerate}[leftmargin=2pc,label=(arabic*)]
    item $2alpha+2delta=90^{circ}$
    item $angle EDF=45^{circ}$
    end{enumerate}
    begin{enumerate}
    item Altenativa A
    item Altenativa B
    item Altenativa C keyans
    item Altenativa D
    item Altenativa E
    end{enumerate}
    item Fourth type of question, a problem with numerical response keyans[$sqrt{2}$]

    end{enumerate}

    section{Worksheet}

    begin{enumerate}[save-ans=Worksheet,left=0pt,labelsep=5pt,nosep,label=arabic*.,columns=2]
    item Factor $x^{2}-2x+1$ answer{$left(x-1right)^{2}$}
    item Factor $3x+3y+3z$ answer{$3(x+y+z)$}
    item True False
    begin{enumerate}
    item $alpha > delta$ answer{False}
    item LaTeX2e is cool? answer{Very True!}
    end{enumerate}
    item Related to Linux
    begin{enumerate}
    item You use linux? answer{Yes}
    item Usually uses the package manager? answer{Yes}
    item Rate the following package managers
    begin{enumerate}
    item dnf answer{good}
    item apt answer{very good}
    item yum answer{obsolete}
    end{enumerate}
    end{enumerate}
    end{enumerate}

    section{Answers}
    showanskey[colback=yellow!30!white]{Multiple Choice Keys}{mchoice}[5]
    showanskey[colback=yellow!30!white]{Solution Worksheet}{Worksheet}[2]

    section{Normal enumerate}
    begin{enumerate}
    item First level
    begin{enumerate}
    item Second level
    item value
    item begin{enumerate}
    item Third level
    item value
    end{enumerate}
    end{enumerate}
    end{enumerate}

    end{document}


    If put in all sublevels columns=1 skip the problem, but, can't do this with showanskey. If instead of using RenewDocumentEnvironment{enumerate} I use directly



    SetEnumitemKey{columns}{before=begin{multicols}{#1},after=end{multicols}}%


    I get the following error:



    ! LaTeX3 Error: Variable l_keyanswer_data_mchoice_seq undefined.


    How can i fix this?



    Grateful










    share|improve this question



























      1












      1








      1


      1






      I have a small problem when trying to keep a key=val locally defining using xparse to pass multicols to enumerate (enumitem package). I have redefined the environment enumerate to accept the columns=number and created commands keyans[...], answer{...} and showanskey[...]{...}{...}[...] to save the multiple choice keys and answers for worksheet exercise , all well except that when activate the columns in the first level of enumerate, affects all the levels nested in it.



      When using columns=2 in the first level it looks like this:



      current result



      all nested environments are in two columns.



      I hope is that the output is something like this:



      expected result



      I tried to put group_begin: and group_end: in different places but I only get errors. The code is adapted from Defining a list environment with multiple optional arguments and MWE:



      % arara: pdflatex
      % arara: clean: { extensions: [ aux, log] }
      documentclass{article}
      usepackage{letltxmacro,enumitem,multicol,xparse}
      usepackage[most]{tcolorbox}
      usepackage[margin=0.6in,noheadfoot,papersize={8.5in,13in}]{geometry} % for mwe
      setlength{parindent}{0pt}
      pagestyle{empty}

      % Set keys for save-ans and save-key in enumitem
      SetEnumitemKey{save-ans}{before={storecurrentid{#1}begin{saveanswer}{#1}},after=end{saveanswer}}%
      SetEnumitemKey{save-key}{before={storecurrentid{#1}begin{savekeyans}{#1}},after=end{savekeyans}}%

      % Save a copy enumerate
      LetLtxMacrooldenumenumerate
      LetLtxMacrooldendenumendenumerate

      % Redefine enumerate for multicols
      ExplSyntaxOn
      RenewDocumentEnvironment{enumerate}{ O{} }
      {
      tl_clear:N l_keyanswer_enumitem_tl
      keys_set:nn { keyanswer } { #1 }
      int_compare:nT { l_keyanswer_columns_tl > 1 }
      {
      setlength{multicolsep}{5.0pt plus 2.0pt minus 1.5pt}
      begin{multicols}{ l_keyanswer_columns_tl }
      }
      keyanswer_beginenum:V l_keyanswer_enumitem_tl
      }
      {
      oldendenum
      int_compare:nT { l_keyanswer_columns_tl > 1 }
      { end{multicols} }
      }
      cs_new_protected:Npn keyanswer_beginenum:n #1
      { oldenum[#1] }

      cs_generate_variant:Nn keyanswer_beginenum:n {V}

      tl_new:N l_keyanswer_columns_tl
      tl_new:N l_keyanswer_enumitem_tl

      keys_define:nn { keyanswer }
      {
      columns .tl_set:N = l_keyanswer_columns_tl,
      columns .initial:n = 1,
      unknown .code:n = tl_put_right:Nx l_keyanswer_enumitem_tl
      { l_keys_key_tl tl_if_empty:nF { #1 } { = exp_not:n { #1 } } , },
      }

      % Implementation to save answer{...} and keyans[...] in lists
      prop_new:N g_keyanswer_admin_prop

      cs_new:Npn storecurrentid #1{%
      prop_gput:Nnn g_keyanswer_admin_prop {current-id} {#1}
      }
      cs_new:Npn retrievecurrentid {%
      prop_item:Nn g_keyanswer_admin_prop {current-id}
      }

      % environments for save answer{...} and keyans[...]
      NewDocumentEnvironment{saveanswer}{ m }{%
      setlist[enumerate,2]{leftmargin=16pt,nosep,itemsep=0pt,label=(alph*),before={stepdownlevel},after={stepuplevel}}%
      setlist[enumerate,3]{leftmargin=20pt,nosep,itemsep=0pt,label=Roman*.,before={stepdownlevel},after={stepuplevel}}%
      seq_if_exist:cF { l_keyanswer_data_#1_seq }{ seq_new:c { l_keyanswer_data_#1_seq }}
      }{ leavevmode }

      NewDocumentEnvironment{savekeyans}{ m }{%
      setlist[enumerate,1]{left=0pt,labelsep=5pt,itemsep=1pt,label=arabic*.}%
      setlist[enumerate,2]{leftmargin=16pt,nosep,label=Alph*)}%
      seq_if_exist:cF { l_keyanswer_data_#1_seq }{%
      seq_new:c { l_keyanswer_data_#1_seq }}}{ leavevmode }

      % commands answer{...} and keyans[...]
      NewDocumentCommand{answer}{ +m }{%
      seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}
      par%
      }

      NewDocumentCommandkeyans{ !o }{%
      IfNoValueTF{#1}{%
      tl_set:Nn l_tmpa_tl {protectitem}%
      tl_put_right:Nx l_tmpa_tl {protectspace Alph{enumii}}%
      seq_gput_right:cV { l_keyanswer_data_ retrievecurrentid _seq }{ l_tmpa_tl}%
      par%
      }{%
      seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}%
      par%
      }%
      }%

      % stepdownlevel and stepuplevel for save in nested enumerate
      newcommand{stepdownlevel}{%
      seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {item begin{enumerate}}
      }
      newcommand{stepuplevel}{%
      seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {end{enumerate}}
      }

      % Display answer{...} and keyans[...] in list by id
      cs_new:Npn displayseqcontent #1#2 {%
      seq_if_empty:cF { l_keyanswer_data_#1_seq } {%
      seq_log:c { l_keyanswer_data_#1_seq }
      setlist[enumerate,1]{labelsep=5pt,label=arabic*.,leftmargin=15pt,labelsep=3pt,font=footnotesize,nosep,widest=80}%
      setlist[enumerate,2]{font=footnotesize,labelsep=5pt,leftmargin=0.6cm,nosep,label=(alph*)}%
      setlist[enumerate,3]{font=footnotesize,labelsep=5pt,leftmargin=0.3cm,nosep,label=Roman*.}%
      begin{enumerate}[#2] smallsetlength{columnsep}{0pt}
      seq_map_inline:cn { l_keyanswer_data_#1_seq } { ##1 }
      end{enumerate}
      }
      }
      ExplSyntaxOff

      % showanskey[tcolorbox]{title}{list ref}[columns]
      DeclareTotalTColorBox{showanskey}{O{} m m O{4}}
      { colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=columnwidth,title filled,%
      fontupper=small,fonttitle=smallsffamily, adjusted title={#2},center title,#1}
      { displayseqcontent{#3}{columns=#4} }%

      begin{document}

      section{Multiple Choice}

      begin{enumerate}[save-key=mchoice,left=0pt,columns=2]
      item First type of questions
      begin{enumerate}
      item value
      item value
      item value
      item correct keyans
      item value
      end{enumerate}
      item Second type of questions
      begin{enumerate}[leftmargin=2pc,label=Roman*.]
      item $2alpha+2delta=90^{circ}$
      item $alpha=delta$
      item $angle EDF=45^{circ}$
      end{enumerate}
      begin{enumerate}[columns=2]%
      item I only
      item II only keyans
      item I and II only
      item I and III only
      item I, II, and III
      end{enumerate}
      %columnbreak %
      item Third type of questions
      begin{enumerate}[leftmargin=2pc,label=(arabic*)]
      item $2alpha+2delta=90^{circ}$
      item $angle EDF=45^{circ}$
      end{enumerate}
      begin{enumerate}
      item Altenativa A
      item Altenativa B
      item Altenativa C keyans
      item Altenativa D
      item Altenativa E
      end{enumerate}
      item Fourth type of question, a problem with numerical response keyans[$sqrt{2}$]

      end{enumerate}

      section{Worksheet}

      begin{enumerate}[save-ans=Worksheet,left=0pt,labelsep=5pt,nosep,label=arabic*.,columns=2]
      item Factor $x^{2}-2x+1$ answer{$left(x-1right)^{2}$}
      item Factor $3x+3y+3z$ answer{$3(x+y+z)$}
      item True False
      begin{enumerate}
      item $alpha > delta$ answer{False}
      item LaTeX2e is cool? answer{Very True!}
      end{enumerate}
      item Related to Linux
      begin{enumerate}
      item You use linux? answer{Yes}
      item Usually uses the package manager? answer{Yes}
      item Rate the following package managers
      begin{enumerate}
      item dnf answer{good}
      item apt answer{very good}
      item yum answer{obsolete}
      end{enumerate}
      end{enumerate}
      end{enumerate}

      section{Answers}
      showanskey[colback=yellow!30!white]{Multiple Choice Keys}{mchoice}[5]
      showanskey[colback=yellow!30!white]{Solution Worksheet}{Worksheet}[2]

      section{Normal enumerate}
      begin{enumerate}
      item First level
      begin{enumerate}
      item Second level
      item value
      item begin{enumerate}
      item Third level
      item value
      end{enumerate}
      end{enumerate}
      end{enumerate}

      end{document}


      If put in all sublevels columns=1 skip the problem, but, can't do this with showanskey. If instead of using RenewDocumentEnvironment{enumerate} I use directly



      SetEnumitemKey{columns}{before=begin{multicols}{#1},after=end{multicols}}%


      I get the following error:



      ! LaTeX3 Error: Variable l_keyanswer_data_mchoice_seq undefined.


      How can i fix this?



      Grateful










      share|improve this question
















      I have a small problem when trying to keep a key=val locally defining using xparse to pass multicols to enumerate (enumitem package). I have redefined the environment enumerate to accept the columns=number and created commands keyans[...], answer{...} and showanskey[...]{...}{...}[...] to save the multiple choice keys and answers for worksheet exercise , all well except that when activate the columns in the first level of enumerate, affects all the levels nested in it.



      When using columns=2 in the first level it looks like this:



      current result



      all nested environments are in two columns.



      I hope is that the output is something like this:



      expected result



      I tried to put group_begin: and group_end: in different places but I only get errors. The code is adapted from Defining a list environment with multiple optional arguments and MWE:



      % arara: pdflatex
      % arara: clean: { extensions: [ aux, log] }
      documentclass{article}
      usepackage{letltxmacro,enumitem,multicol,xparse}
      usepackage[most]{tcolorbox}
      usepackage[margin=0.6in,noheadfoot,papersize={8.5in,13in}]{geometry} % for mwe
      setlength{parindent}{0pt}
      pagestyle{empty}

      % Set keys for save-ans and save-key in enumitem
      SetEnumitemKey{save-ans}{before={storecurrentid{#1}begin{saveanswer}{#1}},after=end{saveanswer}}%
      SetEnumitemKey{save-key}{before={storecurrentid{#1}begin{savekeyans}{#1}},after=end{savekeyans}}%

      % Save a copy enumerate
      LetLtxMacrooldenumenumerate
      LetLtxMacrooldendenumendenumerate

      % Redefine enumerate for multicols
      ExplSyntaxOn
      RenewDocumentEnvironment{enumerate}{ O{} }
      {
      tl_clear:N l_keyanswer_enumitem_tl
      keys_set:nn { keyanswer } { #1 }
      int_compare:nT { l_keyanswer_columns_tl > 1 }
      {
      setlength{multicolsep}{5.0pt plus 2.0pt minus 1.5pt}
      begin{multicols}{ l_keyanswer_columns_tl }
      }
      keyanswer_beginenum:V l_keyanswer_enumitem_tl
      }
      {
      oldendenum
      int_compare:nT { l_keyanswer_columns_tl > 1 }
      { end{multicols} }
      }
      cs_new_protected:Npn keyanswer_beginenum:n #1
      { oldenum[#1] }

      cs_generate_variant:Nn keyanswer_beginenum:n {V}

      tl_new:N l_keyanswer_columns_tl
      tl_new:N l_keyanswer_enumitem_tl

      keys_define:nn { keyanswer }
      {
      columns .tl_set:N = l_keyanswer_columns_tl,
      columns .initial:n = 1,
      unknown .code:n = tl_put_right:Nx l_keyanswer_enumitem_tl
      { l_keys_key_tl tl_if_empty:nF { #1 } { = exp_not:n { #1 } } , },
      }

      % Implementation to save answer{...} and keyans[...] in lists
      prop_new:N g_keyanswer_admin_prop

      cs_new:Npn storecurrentid #1{%
      prop_gput:Nnn g_keyanswer_admin_prop {current-id} {#1}
      }
      cs_new:Npn retrievecurrentid {%
      prop_item:Nn g_keyanswer_admin_prop {current-id}
      }

      % environments for save answer{...} and keyans[...]
      NewDocumentEnvironment{saveanswer}{ m }{%
      setlist[enumerate,2]{leftmargin=16pt,nosep,itemsep=0pt,label=(alph*),before={stepdownlevel},after={stepuplevel}}%
      setlist[enumerate,3]{leftmargin=20pt,nosep,itemsep=0pt,label=Roman*.,before={stepdownlevel},after={stepuplevel}}%
      seq_if_exist:cF { l_keyanswer_data_#1_seq }{ seq_new:c { l_keyanswer_data_#1_seq }}
      }{ leavevmode }

      NewDocumentEnvironment{savekeyans}{ m }{%
      setlist[enumerate,1]{left=0pt,labelsep=5pt,itemsep=1pt,label=arabic*.}%
      setlist[enumerate,2]{leftmargin=16pt,nosep,label=Alph*)}%
      seq_if_exist:cF { l_keyanswer_data_#1_seq }{%
      seq_new:c { l_keyanswer_data_#1_seq }}}{ leavevmode }

      % commands answer{...} and keyans[...]
      NewDocumentCommand{answer}{ +m }{%
      seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}
      par%
      }

      NewDocumentCommandkeyans{ !o }{%
      IfNoValueTF{#1}{%
      tl_set:Nn l_tmpa_tl {protectitem}%
      tl_put_right:Nx l_tmpa_tl {protectspace Alph{enumii}}%
      seq_gput_right:cV { l_keyanswer_data_ retrievecurrentid _seq }{ l_tmpa_tl}%
      par%
      }{%
      seq_gput_right:cn { l_keyanswer_data_ retrievecurrentid _seq }{item #1}%
      par%
      }%
      }%

      % stepdownlevel and stepuplevel for save in nested enumerate
      newcommand{stepdownlevel}{%
      seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {item begin{enumerate}}
      }
      newcommand{stepuplevel}{%
      seq_gput_right:cn {l_keyanswer_data_ retrievecurrentid _seq} {end{enumerate}}
      }

      % Display answer{...} and keyans[...] in list by id
      cs_new:Npn displayseqcontent #1#2 {%
      seq_if_empty:cF { l_keyanswer_data_#1_seq } {%
      seq_log:c { l_keyanswer_data_#1_seq }
      setlist[enumerate,1]{labelsep=5pt,label=arabic*.,leftmargin=15pt,labelsep=3pt,font=footnotesize,nosep,widest=80}%
      setlist[enumerate,2]{font=footnotesize,labelsep=5pt,leftmargin=0.6cm,nosep,label=(alph*)}%
      setlist[enumerate,3]{font=footnotesize,labelsep=5pt,leftmargin=0.3cm,nosep,label=Roman*.}%
      begin{enumerate}[#2] smallsetlength{columnsep}{0pt}
      seq_map_inline:cn { l_keyanswer_data_#1_seq } { ##1 }
      end{enumerate}
      }
      }
      ExplSyntaxOff

      % showanskey[tcolorbox]{title}{list ref}[columns]
      DeclareTotalTColorBox{showanskey}{O{} m m O{4}}
      { colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=columnwidth,title filled,%
      fontupper=small,fonttitle=smallsffamily, adjusted title={#2},center title,#1}
      { displayseqcontent{#3}{columns=#4} }%

      begin{document}

      section{Multiple Choice}

      begin{enumerate}[save-key=mchoice,left=0pt,columns=2]
      item First type of questions
      begin{enumerate}
      item value
      item value
      item value
      item correct keyans
      item value
      end{enumerate}
      item Second type of questions
      begin{enumerate}[leftmargin=2pc,label=Roman*.]
      item $2alpha+2delta=90^{circ}$
      item $alpha=delta$
      item $angle EDF=45^{circ}$
      end{enumerate}
      begin{enumerate}[columns=2]%
      item I only
      item II only keyans
      item I and II only
      item I and III only
      item I, II, and III
      end{enumerate}
      %columnbreak %
      item Third type of questions
      begin{enumerate}[leftmargin=2pc,label=(arabic*)]
      item $2alpha+2delta=90^{circ}$
      item $angle EDF=45^{circ}$
      end{enumerate}
      begin{enumerate}
      item Altenativa A
      item Altenativa B
      item Altenativa C keyans
      item Altenativa D
      item Altenativa E
      end{enumerate}
      item Fourth type of question, a problem with numerical response keyans[$sqrt{2}$]

      end{enumerate}

      section{Worksheet}

      begin{enumerate}[save-ans=Worksheet,left=0pt,labelsep=5pt,nosep,label=arabic*.,columns=2]
      item Factor $x^{2}-2x+1$ answer{$left(x-1right)^{2}$}
      item Factor $3x+3y+3z$ answer{$3(x+y+z)$}
      item True False
      begin{enumerate}
      item $alpha > delta$ answer{False}
      item LaTeX2e is cool? answer{Very True!}
      end{enumerate}
      item Related to Linux
      begin{enumerate}
      item You use linux? answer{Yes}
      item Usually uses the package manager? answer{Yes}
      item Rate the following package managers
      begin{enumerate}
      item dnf answer{good}
      item apt answer{very good}
      item yum answer{obsolete}
      end{enumerate}
      end{enumerate}
      end{enumerate}

      section{Answers}
      showanskey[colback=yellow!30!white]{Multiple Choice Keys}{mchoice}[5]
      showanskey[colback=yellow!30!white]{Solution Worksheet}{Worksheet}[2]

      section{Normal enumerate}
      begin{enumerate}
      item First level
      begin{enumerate}
      item Second level
      item value
      item begin{enumerate}
      item Third level
      item value
      end{enumerate}
      end{enumerate}
      end{enumerate}

      end{document}


      If put in all sublevels columns=1 skip the problem, but, can't do this with showanskey. If instead of using RenewDocumentEnvironment{enumerate} I use directly



      SetEnumitemKey{columns}{before=begin{multicols}{#1},after=end{multicols}}%


      I get the following error:



      ! LaTeX3 Error: Variable l_keyanswer_data_mchoice_seq undefined.


      How can i fix this?



      Grateful







      enumitem expl3 xparse key-value






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Mar 28 at 17:29







      Pablo González L

















      asked Mar 24 at 6:16









      Pablo González LPablo González L

      1,0061820




      1,0061820






















          1 Answer
          1






          active

          oldest

          votes


















          2














          Once you set the keys, the values remain as stated.



          You can simply restore a value by specifying the relevant key, before setting the specified ones:



          keys_set:nn { keyanswer } { #1 } 


          should become



          keys_set:nn { keyanswer } { columns=1, #1 } 





          share|improve this answer
























          • Many thanks again!!!

            – Pablo González L
            Mar 28 at 18:47












          Your Answer








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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          Once you set the keys, the values remain as stated.



          You can simply restore a value by specifying the relevant key, before setting the specified ones:



          keys_set:nn { keyanswer } { #1 } 


          should become



          keys_set:nn { keyanswer } { columns=1, #1 } 





          share|improve this answer
























          • Many thanks again!!!

            – Pablo González L
            Mar 28 at 18:47
















          2














          Once you set the keys, the values remain as stated.



          You can simply restore a value by specifying the relevant key, before setting the specified ones:



          keys_set:nn { keyanswer } { #1 } 


          should become



          keys_set:nn { keyanswer } { columns=1, #1 } 





          share|improve this answer
























          • Many thanks again!!!

            – Pablo González L
            Mar 28 at 18:47














          2












          2








          2







          Once you set the keys, the values remain as stated.



          You can simply restore a value by specifying the relevant key, before setting the specified ones:



          keys_set:nn { keyanswer } { #1 } 


          should become



          keys_set:nn { keyanswer } { columns=1, #1 } 





          share|improve this answer













          Once you set the keys, the values remain as stated.



          You can simply restore a value by specifying the relevant key, before setting the specified ones:



          keys_set:nn { keyanswer } { #1 } 


          should become



          keys_set:nn { keyanswer } { columns=1, #1 } 






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 28 at 18:37









          egregegreg

          731k8919303250




          731k8919303250













          • Many thanks again!!!

            – Pablo González L
            Mar 28 at 18:47



















          • Many thanks again!!!

            – Pablo González L
            Mar 28 at 18:47

















          Many thanks again!!!

          – Pablo González L
          Mar 28 at 18:47





          Many thanks again!!!

          – Pablo González L
          Mar 28 at 18:47


















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