1

I would like to split a multiline content regarding \\ and then split each item regarding . .

Then I would like to iterate over each list in parallel such as to print their items together suchas to print for example a1i b2ii c3iii.

I am trying to pop from the left the first list to read it item by item but this doesn't work... I would like to see a-ok-b-ok-c but I just see a . b . c ... An expansion problem I think...

This question is a simplifcation of the real case of use indicated in this post.

\documentclass{article}

% Source : https://tex.stackexchange.com/a/475291/6880


\RequirePackage{xparse}


\ExplSyntaxOn


%\seq_new:N \l__pmbc_seq % Not useful here.


% #1 : line separator
% #2 : cell separator
% #3 : content
    \NewDocumentCommand{\splittab}{m m +m}{
        \tnscalc_splittab:nnn{#1}{#2}{#3}
    }


% The internal version of the general purpose macro
    \cs_new_protected:Nn \tnscalc_splittab:nnn{
        % #1 : line separator
        % #2 : cell separator
        % #3 : content


    % A group allows nesting
    \group_begin:
        % Split into parts
        \seq_set_split:Nnn \l__pmbc_seq { #1 } { #3 }

        %\int_zero_new:N \l_mbc_N_int  % Not useful here.
        %\int_set:Nn \l_mbc_N_int { \seq_count:N \l__pmbc_seq }  % Not useful here.
        %
        \seq_pop_left:NN \l__pmbc_seq {\l__temp}

        \seq_set_split:Nnn \l__pmbc_subseq { #2 } { \l__temp }

        \seq_use:Nn \l__pmbc_subseq { -ok- }
    \group_end:
} 



\ExplSyntaxOff


\begin{document}
    \splittab{\}{.}{ a . b . c \ 1 . 2 . 3 \ i . ii . ii }
\end{document}
projetmbc
  • 13,315

1 Answers1

1

Please, use proper naming.

\documentclass{article}

% Source : https://tex.stackexchange.com/a/475291/6880


\usepackage{xparse}


\ExplSyntaxOn


\seq_new:N \l__tnscalc_splittab_seq
\seq_new:N \l__tnscalc_subseq_seq
\int_new:N \l__tnscalc_splittab_int
\tl_new:N \l__tnscalc_temp_tl


% #1 : line separator
% #2 : cell separator
% #3 : content
\NewDocumentCommand{\splittab}{m m +m}
 {
  \tnscalc_splittab:nnn{#1}{#2}{#3}
 }


% The internal version of the general purpose macro
\cs_new_protected:Nn \tnscalc_splittab:nnn
 {
  % #1 : line separator
  % #2 : cell separator
  % #3 : content
  % A group allows nesting
  \group_begin:
  % Split into parts
  \seq_set_split:Nnn \l__tnscalc_splittab_seq { #1 } { #3 }


\int_set:Nn \l__tnscalc_splittab_int { \seq_count:N \l__tnscalc_splittab_seq } % why?
  \seq_pop_left:NN \l__tnscalc_splittab_seq \l__tnscalc_temp_tl
  \seq_set_split:NnV \l__tnscalc_subseq_seq { #2 } \l__tnscalc_temp_tl
  \seq_use:Nn \l__tnscalc_subseq_seq { -ok- }
  \group_end:
 } 
\ExplSyntaxOff


\begin{document}


\splittab{\}{.}{ a . b . c \ 1 . 2 . 3 \ i . ii . ii }


\end{document}

You need to split the contents of the token list where the popped item has been stored, so the right function is \seq_set_split:NnV.

It's not clear what's the function of the integer variable.

egreg
  • 1,121,712
  • For the integer, it is used in the post for the real use case. I forgot to remove it in my code (I will do it now)... Thanks for the clarification. – projetmbc Aug 11 '20 at 21:33
  • For the integer variable I will use it to print something and I would like to use it to pop all the elements by poping N times. Is there a best way to pop all the elements ? – projetmbc Aug 11 '20 at 21:39
  • @projetmbc I guess you want \seq_map_inline:Nn – egreg Aug 11 '20 at 21:43
  • Indeed I will pop the three lists splitted regarding \ in parallel and then apply a formatting to the poped elements of each line (the number of & is unbounded)... – projetmbc Aug 11 '20 at 21:50
  • I have post a small question about the way I use to iterate on my lists herer : https://tex.stackexchange.com/questions/558347/expl-3-is-there-a-good-way-to-pop-and-act-on-all-the-items-of-a-list . – projetmbc Aug 11 '20 at 22:25