listofitemsold.tex in runtime

git-svn-id: svn://tug.org/texlive/trunk@51159 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 572 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/generic/listofitems/listofitemsold.tex b/Master/texmf-dist/tex/generic/listofitems/listofitemsold.tex
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+% !TeX encoding = ISO-8859-1
+% Ce fichier contient le code de l'extension "listofitems"
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                                    %
+\def\loiname                 {listofitems}                           %
+\def\loiver                      {1.61}                              %
+%                                                                    %
+\def\loidate                  {2019/03/03}                           %
+%                                                                    %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                                    %
+% Author     : Christian Tellechea, Steven B. Segletes               %
+% Status     : Maintained                                            %
+% Maintainer : Christian Tellechea                                   %
+% Email      : unbonpetit@netc.fr                                    %
+%              steven.b.segletes.civ@mail.mil                        %
+% Package URL: https://www.ctan.org/pkg/listofitems                  %
+% Bug tracker: https://framagit.org/unbonpetit/listofitems/issues    %
+% Repository : https://framagit.org/unbonpetit/listofitems/tree/master
+% Copyright  : Christian Tellechea 2016-2019                         %
+% Licence    : Released under the LaTeX Project Public License v1.3c %
+%              or later, see http://www.latex-project.org/lppl.txt   %
+% Files      : 1) listofitems.tex                                    %
+%              2) listofitems.sty                                    %
+%              3) listofitems-fr.tex                                 %
+%              4) listofitems-fr.pdf                                 %
+%              5) listofitems-en.tex                                 %
+%              6) listofitems-en.pdf                                 %
+%              7) README                                             %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\ifdefined\ProvidesPackage\else
+	\immediate\write -1 {%
+	Package: \loidate\space v\loiver\space Grab items in lists using user-specified sep char (CT)}%
+\fi
+
+\expandafter\edef\csname loi_restorecatcode\endcsname{\catcode\number`\_=\number\catcode`\_\relax}
+\catcode`\_11
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%% gestion des erreurs %%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\ifdefined\PackageError
+	\def\loi_error#1{\PackageError\loiname{#1}{Read the manual}}% pour LaTeX
+\else
+	\def\loi_error#1{\errmessage{Package \loiname\space Error: #1^^J}}% pour TeX
+\fi
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%% vérification de la présence de etex %%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begingroup
+\edef\__tempa{\meaning\eTeXversion}\edef\__tempb{\string\eTeXversion}%
+\ifx\__tempa\__tempb
+	\endgroup
+\else
+	\endgroup
+	\loi_error{You are not using an eTeX engine, listofitems cannot work.}%
+	\loi_restorecatcode\expandafter\endinput
+\fi
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% macros auxiliaires %%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\chardef\loi_stop=0
+\def\loi_quark{\loi_quark}
+\long\def\loi_identity#1{#1}
+\long\def\loi_gobarg#1{}
+\long\def\loi_first#1#2{#1}
+\long\def\loi_second#1#2{#2}
+\long\def\loi_firsttonil#1#2\_nil{#1}
+\long\def\loi_antefi#1#2\fi{#2\fi#1}
+\long\def\loi_exparg#1#2{\expandafter\loi_exparg_a\expandafter{#2}{#1}}% \loi_exparg{<a>}{<b>} devient <a>{<*b>}
+\long\def\loi_exparg_a#1#2{#2{#1}}
+\long\def\loi_expafter#1#2{\expandafter\loi_expafter_a\expandafter{#2}{#1}}% \loi_expafter{<a>}{<b>} devient <a><*b>
+\long\def\loi_expafter_a#1#2{#2#1}
+\def\loi_macroname{\loi_ifinrange\escapechar[[0:255]]{\expandafter\loi_gobarg}{}\string}
+\def\loi_argcsname#1#{\loi_argcsname_a{#1}}
+\def\loi_argcsname_a#1#2{\loi_expafter{#1}{\csname#2\endcsname}}
+\long\def\loi_addtomacro#1#2{\loi_exparg{\def#1}{#1#2}}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%% macros de test %%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\long\def\loi_ifnum#1{\ifnum#1\expandafter\loi_first\else\expandafter\loi_second\fi}
+\long\def\loi_ifx#1{\ifx#1\expandafter\loi_first\else\expandafter\loi_second\fi}
+\long\def\loi_ifempty#1{\loi_exparg\loi_ifx{\expandafter\relax\detokenize{#1}\relax}}
+\def\loi_ifstar#1#2{\def\loi_ifstar_a{\loi_ifx{*\loi_nxttok}{\loi_first{#1}}{#2}}\futurelet\loi_nxttok\loi_ifstar_a}
+\long\def\loi_ifstuffexpandable#1{\def\loi_tempa{#1}\loi_exparg{\def\loi_tempb}{#1}\expandafter\unless\loi_ifx{\loi_tempa\loi_tempb}}
+\long\def\loi_ifcsexpandable#1{% #1 est-il constitué d'une sc _développable_ ?
+	\loi_ifempty{#1}
+		{\loi_second
+		}
+		{\loi_ifspacefirst{#1}
+			{\loi_second% si espace en 1er, faux
+			}
+			{%
+			\loi_exparg\loi_ifempty{\loi_gobarg#1}% 1 seul token ?
+				{\begingroup\escapechar`\_\def\_{#1}\expandafter\endgroup
+					\csname loi_\if\expandafter\expandafter\expandafter\loi_firsttonil\expandafter\string\_\_nil\string _first\else second\fi\endcsname
+						{\loi_ifstuffexpandable{#1}}
+						{\loi_second}%
+				}
+				{\loi_second% si plusieurs tokens, faux
+				}%
+			}%
+		}%
+}
+\def\loi_ifinrange#1[[#2:#3]]{\loi_ifnum{\numexpr(#1-#2)*(#1-#3)>0 }\loi_second\loi_first}
+\def\loi_ifstring#1\in#2{% si la chaine #1 est contenue dans #2
+	\def\loi_ifstring_a##1#1##2\_nil{\loi_ifempty{##2}\loi_second\loi_first}%
+	\loi_ifstring_a#2#1\@nil% appel de la macro auxiliaire
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% macros \loi_foreach %%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newcount\loi_cnt_foreach_nest \loi_cnt_foreach_nest=0
+\def\end_foreach{\end_foreach}
+\def\loi_def_foreachsep#1{%
+	\long\def\loi_foreach##1\in##2##3{%
+		\global\advance\loi_cnt_foreach_nest1
+		\loi_argcsname\def{loop_code_\number\loi_cnt_foreach_nest}{##3}%
+		\loi_foreach_a##1##2#1\end_foreach#1%
+		\loi_argcsname\let{loop_code_\number\loi_cnt_foreach_nest}\empty
+		\global\advance\loi_cnt_foreach_nest-1
+	}%
+	\long\def\loi_foreach_a##1##2#1{%
+		\def##1{##2}%
+		\loi_ifx{\end_foreach##1}
+			{}
+			{\csname loop_code_\number\loi_cnt_foreach_nest\endcsname% exécute le code
+			\loi_foreach_a##1%
+			}%
+	}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%% macros gérant l'appariement %%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\long\def\defpair#1{%
+	\let\loi_listofpair\empty
+	\loi_ifempty{#1}
+		{}
+		{\defpair_a{}#1\loi_quark\loi_quark}%
+}
+\long\def\defpair_a#1#2#3{%
+	\loi_ifx{\loi_quark#2}
+		{\def\loi_sanitizelist##1,\_nil{\def\loi_listofpair{##1}}%
+		\loi_sanitizelist#1\_nil
+		}
+		{\loi_if_validpair#2#3%
+			{\long\def\loi_paired_a{#2}\long\def\loi_paired_b{#3}%
+			\loi_ifx{\loi_paired_a\loi_paired_b}
+				{\loi_error{Paired tokens must not be equal, the pair \detokenize{#2#3} is ignored}%
+				\defpair_a{#1}%
+				}
+				{\defpair_a{#1#2#3,}%
+				}%
+			}
+			{\loi_error{Invalid paired tokens, the pair "\detokenize{#2}" and "\detokenize{#3}" is ignored}%
+			\defpair_a{#1}%
+			}%
+		}%
+}
+\long\def\loi_if_validpair#1#2{%
+	\def\loi_validpair{1}%
+	\loi_if_invalid_pairtoken{#1}{\def\loi_validpair{0}}%
+	\loi_if_invalid_pairtoken{#2}{\def\loi_validpair{0}}%
+	\loi_ifnum{\loi_validpair=1 }
+}
+\long\def\loi_if_invalid_pairtoken#1{%
+	\loi_ifempty{#1}
+		{\loi_identity
+		}
+		{\loi_ifspacefirst{#1}
+			{\loi_identity
+			}
+			{\loi_exparg\loi_ifempty{\loi_gobarg#1}% 1 seul token ?
+				{\ifcat\relax\noexpand#1\expandafter\loi_identity\else\expandafter\loi_gobarg\fi}
+				{\loi_identity}% si plusieurs tokens, faux
+			}%
+		}%
+}
+\long\def\loi_count_occur#1\in#2:#3{% compte le nombre d'occurrences de #1 dans #2 et met le résultat dans la macro #3
+	\long\def\loi_count_occur_a##1##2#1##3\_nil{%
+		\loi_ifempty{##3}
+			{\def#3{##1}}
+			{\expandafter\loi_count_occur_a\number\numexpr##1+1\relax##3\_nil}%
+	}%
+	\loi_count_occur_a0#2#1\_nil
+}
+\long\def\loi_check_pair#1#2\in#3{% teste l'appariement de #1 et #2 dans #3
+	\loi_ifempty{#3}
+		{\loi_second
+		}
+		{\loi_count_occur#1\in#3:\loi_tempa
+		\loi_count_occur#2\in#3:\loi_tempb
+		\loi_ifnum{\loi_tempa=\loi_tempb\relax}%
+		}%
+}
+\long\def\loi_grabpaired_expr#1#2#3#4#5{% #1=liste de paires  #2=expression  #3=séparateur   #4=résultat    #5=ce qui reste
+	\let#4\empty
+	\def\loi_remain{#2#3}%
+	\loi_foreach\loi_pair\in{#1}{\expandafter\loi_grabpaired_expr_a\loi_pair{#3}#4}%
+	\def\loi_remove_lastsep##1#3\_nil{\def#4{##1}}%
+	\expandafter\loi_remove_lastsep#4\_nil
+	\expandafter\long\expandafter\def\expandafter\loi_grab_remain#4##1\_nil{\loi_ifempty{##1}{\let#5\empty}{\loi_exparg{\def#5}{\loi_gobarg##1}}}%
+	\loi_grab_remain#2\_nil
+}
+\long\def\loi_grabpaired_expr_a#1#2#3#4{% #1#2=paire en cours  #3=séparateur   #4=résultat
+	\loi_exparg{\loi_check_pair#1#2\in}#4% si les paires sont appariées dans le résultat
+		{}% passer à la paire suivante
+		{\long\def\loi_grabpaired_expr_b##1#3##2\_nil{%
+			\loi_addtomacro#4{##1#3}% ajouter au résultat ce qui est jusqu'au prochain séparateur
+			\def\loi_remain{##2}%
+			\loi_exparg{\loi_check_pair#1#2\in}{#4}
+				{}
+				{\loi_ifempty{##2}
+					{\loi_error{"\detokenize{#1}" and "\detokenize{#2}" are not paired}}
+					{\loi_grabpaired_expr_b##2\_nil}%
+				}%
+			}%
+		\expandafter\loi_grabpaired_expr_b\loi_remain\_nil
+		}%
+}
+\def\insidepair#1#2#3#4{% #1#2=paire  #3=expr  #4=macro reçevant le resultat
+	\loi_if_validpair#1#2%
+		{\loi_ifcsexpandable{#3}
+			{\loi_exparg{\insidepair#1#2}{#3}#4%
+			}
+			{\loi_check_pair#1#2\in{#3}% si les paires sont appariées dans le résultat
+				{\def\insidepair_a##1#1##2\_nil{\insidepair_b##2\_nil{#1}}%
+				\def\insidepair_b##1#2##2\_nil##3{%
+					\loi_check_pair#1#2\in{##3##1#2}
+						{\loi_exparg{\def#4}{\loi_gobarg##3##1}}%
+						{\insidepair_b##2\_nil{##3##1#2}}%
+					}%
+				\insidepair_a#3\_nil
+				}
+				{\loi_error{"\detokenize{#1}" and "\detokenize{#2}" are not paired in "#3"}%
+				}%
+			}%
+		}
+		{\loi_error{Invalid paired tokens "\detokenize{#1}" and "\detokenize{#2}", empty \string#4 returned}% et bim
+		\let#4\empty% voilà, bien fait pour vos gueules
+		}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% macro \loi_fornum %%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\loi_fornum#1=#2to#3\do{%
+	\edef#1{\number\numexpr#2}\edef\loi_sgncmp{\ifnum#1<\numexpr#3\relax>+\else<-\fi}%
+	\expandafter\loi_fornum_a\csname loi_fornum_\string#1\expandafter\endcsname\expandafter{\number\numexpr#3\expandafter}\loi_sgncmp#1%
+}
+\long\def\loi_fornum_a#1#2#3#4#5#6{\def#1{\unless\ifnum#5#3#2\relax\loi_antefi{#6\edef#5{\number\numexpr#5#41\relax}#1}\fi}#1}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%% macro retirant les espaces extrêmes %%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\long\def\loi_ifspacefirst#1{\expandafter\loi_ifspacefirst_a\detokenize{#10} \_nil}
+\long\def\loi_ifspacefirst_a#1 #2\_nil{\loi_ifempty{#1}}
+\expandafter\def\expandafter\loi_gobspace\space{}
+\def\loi_removefirstspaces{\romannumeral\loi_removefirstspaces_a}
+\long\def\loi_removefirstspaces_a#1{\loi_ifspacefirst{#1}{\expandafter\loi_removefirstspaces_a\expandafter{\loi_gobspace#1}}{\loi_stop#1}}
+\edef\loi_restorezerocatcode{\catcode0=\number\catcode0 \relax}
+\catcode0 12
+\long\def\loi_removelastspaces#1{\romannumeral\loi_removelastspaces_a#1^^00 ^^00\_nil}
+\long\def\loi_removelastspaces_a#1 ^^00{\loi_removelastspaces_b#1^^00}
+\long\def\loi_removelastspaces_b#1^^00#2\_nil{\loi_ifspacefirst{#2}{\loi_removelastspaces_a#1^^00 ^^00\_nil}{\loi_stop#1}}
+\loi_restorezerocatcode
+\long\def\loi_removeextremespaces#1{% #1=texte où les espaces extrêmes sont retirés
+	\romannumeral\expandafter\expandafter\expandafter\loi_removelastspaces\expandafter\expandafter\expandafter
+	{\expandafter\expandafter\expandafter\loi_stop\loi_removefirstspaces{#1}}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%% macro publique \setsepchar %%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\setsepchar{\futurelet\loi_nxttok\setsepchar_a}
+\def\setsepchar_a{\loi_ifx{[\loi_nxttok}\setsepchar_b{\setsepchar_b[/]}}
+\long\def\setsepchar_b[#1]#2{% #1=sepcar de <liste des sepcar>  #2=<liste des sepcar>
+	\loi_ifempty{#1}
+		{\loi_error{Empty separator not allowed, separator "/" used}%
+		\setsepchar_b[/]{#2}%
+		}
+		{\def\loi_currentsep{#1}%
+		\_removeextremespacesfalse
+		\loi_nestcnt1 % réinitaliser niveau initial à 1
+		\def\nestdepth{1}%
+		\loi_argcsname\let{loi_previndex[\number\loi_nestcnt]}\empty
+		\def\loi_listname{loi_listofsep}%
+		\let\loi_def\def \let\loi_edef\edef \let\loi_let\let
+		\let\loi_listofpair_saved\loi_list_ofpair
+		\let\loi_list_ofpair\empty
+		\loi_ifempty{#2}
+			{\loi_error{Empty list of separators not allowed, "," used}%
+			\readlist_e1{,}%
+			}
+			{\readlist_e1{#2}%
+			}%
+		\loi_argcsname\let\nestdepth{loi_listofseplen[0]}%
+		\loi_argcsname\let\loi_currentsep{loi_listofsep[1]}% 1er car de séparation
+		\let\loi_listofpair\loi_listofpair_saved
+		}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%% macro normalisant l'index %%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\loi_normalizeindex#1#2#3{% #1=macroname  #2=liste d'index  #3=profondeur max --> renvoie {err}{indx norm}
+	\loi_ifempty{#2}
+		{\loi_stop{}{}}
+		{\loi_normalizeindex_a1{}{#3}{#1}#2,\loi_quark,}%
+}%
+\def\loi_normalizeindex_a#1#2#3#4#5,{% #1=compteur de profondeur #2=index précédents  #3=profondeur max #4=macroname  #5=index courant
+	\loi_ifx{\loi_quark#5}
+		{\loi_normalizeindex_c#2\loi_quark% supprimer la dernière virgule
+		}
+		{\loi_ifnum{#1>#3 }
+			{\loi_invalidindex{Too deeply nested index, index [.] retained}{#2}% si profondeur trop grande
+			}
+			{\loi_ifinrange\ifnum\numexpr#5<0 -1*\fi(#5)[[1:\csname #4len[#20]\endcsname]]% si abs(#5) hors de [1,len]
+				{\loi_exparg\loi_normalizeindex_b{\number\numexpr#5\ifnum\numexpr#5<0 +\csname #4len[#20]\endcsname+1\fi}{#1}{#2}{#3}{#4}}
+				{\loi_invalidindex{#5 is an invalid index, index [.] retained}{#2}}%
+			}%
+		}%
+}
+\def\loi_normalizeindex_b#1#2#3{\loi_exparg\loi_normalizeindex_a{\number\numexpr#2+1}{#3#1,}}% #1=index à rajouter  #2=compteur de profondeur #3=index précédents
+\def\loi_normalizeindex_c#1,\loi_quark{\loi_stop{}{#1}}
+\def\loi_invalidindex#1#2{\loi_ifempty{#2}{\loi_invalidindex_a{#1},}\loi_invalidindex_a{#1}{#2}}
+\def\loi_invalidindex_a#1#2{\loi_invalidindex_b#1\loi_quark#2\loi_quark}
+\def\loi_invalidindex_b#1[.]#2\loi_quark#3,\loi_quark#4\loi_quark,{\loi_stop{#1[#3]#2}{#3}}% #4= index ignorés
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%% macro publique \readlist %%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newcount\loi_nestcnt
+\def\greadlist{\let\loi_def\gdef\let\loi_edef\xdef\def\loi_let{\global\let}\readlist_a}%
+\def\readlist{\let\loi_def\def\let\loi_edef\edef\let\loi_let\let\readlist_a}
+\def\readlist_a{%
+	\loi_nestcnt1 % niveau initial = 1
+	\loi_argcsname\let{loi_previndex[\number\loi_nestcnt]}\empty
+	\loi_ifstar{\_removeextremespacestrue\readlist_b}{\_removeextremespacesfalse\readlist_b}%
+}
+\long\def\readlist_b#1#2{% #1=macro stockant les éléments  #2=liste des éléments
+	\loi_ifcsexpandable{#2}
+		{\loi_exparg{\readlist_b#1}{#2}%
+		}
+		{\loi_edef\loi_listname{\loi_macroname#1}%
+		\loi_argcsname\loi_let{\loi_listname nest}\nestdepth
+		\loi_argcsname\loi_def{\loi_listname[]}{#2}% la liste entière
+		\loi_argcsname\loi_def{\loi_listname sep[]}{}% séparateur vide
+		\loi_ifempty{#2}
+			{\loi_def#1[##1]{}%
+			\loi_argcsname\loi_def{\loi_listname len}{0}\loi_argcsname\loi_def{\loi_listname len[0]}{0}%
+			\loi_error{Empty list ignored, nothing to do}%
+			}
+			{\loi_edef#1[##1]{\unexpanded{\romannumeral\expandafter\loi_checkindex\romannumeral\loi_normalizeindex}{\loi_listname}{##1}{\csname\loi_listname nest\endcsname}{\loi_listname}}%
+			\loi_argcsname\loi_edef{\loi_listname sep}[##1]{\unexpanded{\romannumeral\expandafter\loi_checkindex\romannumeral\loi_normalizeindex}{\loi_listname}{##1}{\csname\loi_listname nest\endcsname}{\loi_listname sep}}%
+			\readlist_c{#2}%
+			\loi_argcsname\loi_argcsname\loi_let{\loi_listname len}{\loi_listname len[0]}% longueur du niveau 0
+			}%
+		}%
+}
+\def\loi_checkindex#1#2#3{%
+	\expandafter\expandafter\expandafter\loi_stop\csname#3[#2]\expandafter\endcsname
+	\romannumeral\loi_ifempty{#1}{\loi_stop}{\loi_stop\loi_error{#1}}%
+}
+\def\readlist_c{%
+	\loi_argcsname\loi_let\loi_currentsep{loi_listofsep[\number\loi_nestcnt]}%
+	\expandafter\readlist_d\loi_currentsep||\_nil
+}
+\long\def\readlist_d#1||#2\_nil#3{\readlist_e1{#3#1}}% #1=<sep courant simple>  #3=liste -> rajoute un élément vide pour le test \ifempty ci dessous
+\long\def\readlist_e#1#2{% #1=compteur d'index  #2=liste d'éléments à examiner terminée par <sep courant simple> >>RIEN laissé après
+	\loi_ifempty{#2}
+		{\loi_argcsname\loi_edef{\loi_listname len[\csname loi_previndex[\number\loi_nestcnt]\endcsname0]}{\number\numexpr#1-1\relax}%
+		\loi_argcsname\loi_let{\loi_listname sep[\csname loi_previndex[\number\loi_nestcnt]\endcsname\number\numexpr#1-1\relax]}\empty% le dernier <sep> est <vide> ##NEW v1.52
+		\advance\loi_nestcnt-1
+		\loi_argcsname\loi_let\loi_currentsep{loi_listofsep[\number\loi_nestcnt]}%
+		}
+		{\loi_expafter{\readlist_f{#2}{}}\loi_currentsep||\loi_quark||#2\_nil{#1}% aller isoler le 1er item
+		}%
+}
+\long\def\readlist_f#1#2#3||{% #1=liste restante   #2=<dernier sep utilisé>  #3=<sep courant>
+	\loi_ifx{\loi_quark#3}% on a épuisé tous les <séparateurs> ? RESTE à lire <expr+sep1>\_nil{<compteur>}
+		{\loi_ifempty{#2}% si #2 vide, aucun <sep utilisé> n'a été trouvé, il reste à lire "<liste complète>\_nil"
+			{\long\def\readlist_g##1\_nil##2{\loi_exparg{\readlist_h{##2}{}}{\loi_gobarg##1}{#2}}% ##2=compteur d'index
+			}
+			{\loi_ifx{\loi_listofpair\empty}% paires définies ?
+				{\long\def\readlist_g##1#2##2\_nil##3{\loi_exparg{\readlist_h{##3}{##2}}{\loi_gobarg##1}{#2}}%
+				}
+				{\long\def\readlist_g##1\_nil##2{%
+					\loi_exparg{\loi_exparg\loi_grabpaired_expr\loi_listofpair}{\loi_gobarg##1}{#2}\loi_grabpaired_result\loi_grabpaired_remain
+					\loi_exparg{\loi_exparg{\readlist_h{##2}}{\loi_grabpaired_remain}}{\loi_grabpaired_result}{#2}}%
+				}%
+			}%
+		\readlist_g\relax% le \relax meuble l'argument délimité
+		}
+		{\long\def\readlist_g##1#3##2\_nil{%
+			\loi_ifempty{##2}% si <liste restante> ne contient pas le <sep courant>
+				{\readlist_f{#1}{#2}% recommencer avec le même <sep utile>
+				}%
+				{\loi_ifx{\loi_listofpair\empty}% si pas de paires définies
+					{\loi_exparg\readlist_f{\loi_gobarg##1#3}{#3}% raccourcir <liste restante> et <sep courant>:=<sep utile>% ##BUGFIX v1.53
+					}%
+					{\loi_exparg\loi_grabpaired_expr\loi_listofpair{#1}{#3}\loi_grabpaired_result\loi_grabpaired_remain
+					\loi_exparg\readlist_f{\loi_grabpaired_result#3}{#3}%
+					}%
+				}%
+			}%
+		\readlist_g\relax#1#3\_nil% ##BUGFIX v1.53
+		}%
+}
+\long\def\readlist_h#1#2#3{% #1=compteur d'index  #2=liste restante  #3=élément courant
+	\loi_ifnum{0\loi_exparg\loi_ifspacefirst{\loi_currentsep}{}1\if_removeextremespaces1\fi=11 }% s'il faur retirer les espaces extrêmes
+		{\loi_exparg{\loi_exparg{\readlist_i{#1}{#2}}}{\loi_removeextremespaces{#3}}}% redéfinir l'élément courant
+		{\readlist_i{#1}{#2}{#3}}%
+}
+\long\def\readlist_i#1#2#3#4{% #1=compteur d'index  #2=liste restante  #3=élément courant   #4=sep utilisé
+	\loi_ifnum{0\if_ignoreemptyitems1\fi\loi_ifempty{#3}1{}=11 }
+		{\readlist_e{#1}{#2}% si l'on n'ignore pas les éléments vides
+		}%
+		{\loi_argcsname\loi_def{\loi_listname[\csname loi_previndex[\number\loi_nestcnt]\endcsname#1]}{#3}% assignation de l'item ctuel à la macro
+		\loi_argcsname\loi_def{\loi_listname sep[\csname loi_previndex[\number\loi_nestcnt]\endcsname#1]}{#4}% assignation du <sep> actuel à la macro \<macrolist>sep
+		\loi_ifnum{\loi_nestcnt<\nestdepth\relax}% si imbrication max non atteinte
+			{\advance\loi_nestcnt1
+			\loi_argcsname\edef{loi_previndex[\number\loi_nestcnt]}{\csname loi_previndex[\number\numexpr\loi_nestcnt-1]\endcsname#1,}%
+			\readlist_c{#3}% recommencer avec l'élément courant
+			}
+			{}%
+		\loi_exparg\readlist_e{\number\numexpr#1+1}{#2}% puis chercher l'élément suivant dans la liste restante
+		}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%% macro \listlen %%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\listlen#1[#2]{%
+	\romannumeral\loi_ifempty{#2}
+		{\expandafter\expandafter\expandafter\loi_stop\csname\loi_macroname#1len[0]\endcsname}
+		{\loi_exparg\listlen_a{\romannumeral-`\.\loi_macroname#1}{#2}}%
+}
+\def\listlen_a#1#2{% #1=macro name   #2=index non normalisé    prendre <profondeur max-1>
+	\loi_exparg{\expandafter\listlen_b\romannumeral\loi_normalizeindex{#1}{#2}}{\number\numexpr\csname#1nest\endcsname-1}{#1}%
+}
+\def\listlen_b#1#2#3{% #1=err   #2=index normalisé  #3=macroname
+	\expandafter\expandafter\expandafter\loi_stop\csname#3len[#2,0]\expandafter\endcsname
+	\romannumeral\loi_ifempty{#1}{\loi_stop}{\loi_stop\loi_error{#1}}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% macro \foreachitem %%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\foreachitem#1\in#2{%
+	\edef\foreachitem_a{\noexpand\foreachitem_c\noexpand#1{\expandafter\noexpand\csname\loi_macroname#1cnt\endcsname}{\loi_macroname#2}}%
+	\futurelet\loi_nxttok\foreachitem_b
+}
+\def\foreachitem_b{\loi_ifx{\loi_nxttok[}\foreachitem_a{\foreachitem_a[]}}
+\def\foreachitem_c#1#2#3[#4]{% prendre <profondeur max-1>
+	\loi_exparg{\expandafter\foreachitem_d\romannumeral\loi_normalizeindex{#3}{#4}}{\number\numexpr\csname#3nest\endcsname-1}#1{#2}{#3}%
+}
+\def\foreachitem_d#1#2{\loi_ifempty{#2}{\foreachitem_e{#1}{}}{\foreachitem_e{#1}{#2,}}}% #1=err  #2=index norm
+\long\def\foreachitem_e#1#2#3#4#5#6{% #1=err  #2=index norm  #3=macroiter  #4=compteur associé  #5=nom de macrolist  #6=code
+	\loi_ifnum{\csname#5len[#20]\endcsname>0 }
+		{\loi_ifempty{#1}{}{\loi_error{#1}}%
+		\loi_fornum#4=1to\csname#5len[#20]\endcsname\do{\loi_argcsname\let#3{#5[#2#4]}#6}%
+		}
+		{}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%% macro \showitem %%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\showitems{\loi_ifstar{\let\showitems_cmd\detokenize\showitems_a}{\let\showitems_cmd\loi_identity\showitems_a}}
+\def\showitems_a#1{\def\showitems_b{\showitems_d#1}\futurelet\loi_nxttok\showitems_c}
+\def\showitems_c{\loi_ifx{\loi_nxttok[}\showitems_b{\showitems_b[]}}
+\def\showitems_d#1[#2]{\foreachitem\showitems_ater\in#1[#2]{\showitemsmacro{\expandafter\showitems_cmd\expandafter{\showitems_ater}}}}
+\unless\ifdefined\fbox
+	\newdimen\fboxrule \newdimen\fboxsep \fboxrule=.4pt \fboxsep=3pt % réglages identiques à LaTeX
+	\def\fbox#1{% imitation de la macro \fbox de LaTeX, voir pages 271 à 274 de "Apprendre à programmer en TeX"
+		\hbox{%
+			\vrule width\fboxrule
+			\vtop{%
+				\vbox{\hrule height\fboxrule \kern\fboxsep \hbox{\kern\fboxsep#1\kern\fboxsep}}%
+				\kern\fboxsep \hrule height\fboxrule
+			}\vrule width\fboxrule
+		}%
+	}
+\fi
+\def\showitemsmacro#1{% encadrement par défaut
+	\begingroup\fboxsep=0.25pt \fboxrule=0.5pt \fbox{\strut#1}\endgroup
+	\hskip0.25em\relax
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% macro \itemtomacro %%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\itemtomacro#1[#2]{% #1[#2]=item  non encore lu: #3=macro
+	\edef\loi_listname{\loi_macroname#1}%
+	\loi_exparg{\expandafter\itemtomacro_a\romannumeral\expandafter\loi_normalizeindex\expandafter{\loi_listname}{#2}}{\csname\loi_listname nest\endcsname}\let
+}
+\def\gitemtomacro#1[#2]{% #1[#2]=item
+	\xdef\loi_listname{\loi_macroname#1}%
+	\loi_exparg{\expandafter\itemtomacro_a\romannumeral\expandafter\loi_normalizeindex\expandafter{\loi_listname}{#2}}{\csname\loi_listname nest\endcsname}{\global\let}%
+}
+\def\itemtomacro_a#1#2#3#4{%
+	\loi_ifempty{#1}{}{\loi_error{#1}}%
+	\loi_argcsname#3#4{\loi_listname[#2]}%
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%% réglages par défaut %%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newif\if_removeextremespaces
+\newif\if_ignoreemptyitems
+\let\ignoreemptyitems\_ignoreemptyitemstrue
+\let\reademptyitems\_ignoreemptyitemsfalse
+\setsepchar{,}
+\defpair{}
+\loi_def_foreachsep{,}
+\reademptyitems
+
+\loi_restorecatcode
+\endinput
+
+######################################################################
+############################  Historique #############################
+######################################################################
+
+v1.0  19/8/2016
+  - Première version publique
+
+v1.1  01/09/2016
+  - Stockage des séparateurs dans <macrolist>sep
+  - bug corrigé dans \loi_restorecatcode
+
+v1.2  22/10/2016
+  - macros \greadlist et \gitemtomacro pour la globalité
+
+v1.3  18/11/2016
+  - bugs corrigés dans la gestion de la globalité
+
+v1.4  05/10/2017
+  - test \loi_ifprimitive ajouté au test \loi_ifcs
+  - suppression de \loi_expafternil, création de \loi_expafter,
+    modification de \loi_argcsname
+  - correction d'un bug : \setsepchar{\par} ne provoque plus
+    d'erreur. \loi_ifnum devient \long
+
+v1.5  06/10/2017
+  - correction d'un bug dans \loi_ifcs
+
+v1.51 24/10/2017
+  - correction d'un bug dans \loi_ifcs
+
+v1.52 13/01/2018
+  - le dernier séparateur est <vide>
+
+v1.53 13/03/2018
+  - correction d'un bug dans \readlist_g
+
+v1.6 01/11/2018
+  - possibilité d'appariement de tokens dans les items
+  
+v1.61 03/03/2019
+    - la macro \loi_ifcs contient une erreur de conception.
+      Il faut tester si le token est un sc && s'il est
+      développable pour renvoyer vrai car il existe des sc
+      non développables && qui ne sont _pas_ des primitives.
+      Macro rebaptisée \loi_ifcsexpandable
\ No newline at end of file