version 0.13

code/xsim.environments.code.tex

@@ -447,7 +447,7 @@
     \xsim_if_write_to_files:TF
       {
         \NewDocumentEnvironment
-          { \xsim_get_parameter:nn {#1} {#2-env} } {o}
+          { \xsim_get_parameter:nn {#1} {#2-env} } {!o}
           {
             \IfNoValueTF {##1}
               {

code/xsim.sty

@@ -65,7 +65,8 @@
     final     .bool_gset:N         = \g_xsim_final_bool ,
     verbose   .bool_gset:N         = \g_xsim_verbose_bool ,
     clear-aux .bool_gset:N         = \g_xsim_clear_aux_bool ,
-    no-files  .bool_gset_inverse:N = \g__xsim_write_to_file_bool
+    no-files  .bool_gset_inverse:N = \g__xsim_write_to_file_bool ,
+    no-files  .initial:n           = false
   }
 
 \ProcessKeysPackageOptions {xsim/package}

code/xsim.verbwrite.code.tex

@@ -103,10 +103,18 @@
     % see http://tex.stackexchange.com/q/9035/5049 reasons
     \use:nx
       { \__xsim_file_write_start:n {#2} }
-      { \bool_if:nF {#1} { \c__xsim_active_eol_tl } }
+      { \bool_if:nF {#1} { \exp_not:V \c__xsim_active_eol_tl } }
   }
 \cs_generate_variant:Nn \xsim_file_write_start:nn {nV}
 
+\cs_new_protected:Npn \__xsim_set_verb_catcodes:
+  {
+    \seq_map_inline:Nn \l_char_special_seq
+      { \char_set_catcode_other:N ##1 }
+    \int_step_inline:nnnn {128} {1} {255}
+      { \char_set_catcode_letter:n {##1} }
+  }
+
 \group_begin:
 \char_set_catcode_active:n {13} % ^^M (carriage return, endlinechar)
 \char_set_catcode_active:n {12} % ^^L (form feed)
@@ -130,10 +138,7 @@
               { \l_xsim_file_begin_tl } %
           } %
       } %
-    \seq_map_inline:Nn \l_char_special_seq %
-      { \char_set_catcode_other:N ##1 } %
-    \int_step_inline:nnnn {128} {1} {255} %
-      { \char_set_catcode_letter:n {##1} } %
+    \__xsim_set_verb_catcodes: %
     \tl_set:Nx \l__xsim_tmpa_tl %
       { \c__xsim_backslash_char_tl end \cs_to_str:N \{ \@currenvir \cs_to_str:N \} } %
     \use:x %

doc/examples/xsim.texsx-338165.tex

@@ -8,9 +8,7 @@
 \usepackage{xsim}
 \usepackage{tcolorbox}
 \tcbuselibrary{breakable, skins}
-\settasks{
-  counter-format = tsk.
-}
+\settasks{ label = \arabic*. }
 
 \DeclareExerciseEnvironmentTemplate{boxed}
   {%

doc/xsim-manual.cls

@@ -263,6 +263,9 @@
 }
 
 \def\libertine@figurestyle{LF}
+\RequirePackage{amsmath}
+\undef\lvert \undef\lVert
+\undef\rvert \undef\rVert
 \RequirePackage[libertine]{newtxmath}
 \def\libertine@figurestyle{OsF}
 
@@ -587,7 +590,7 @@
 \RequirePackage{bookmark}
 
 \xsimsetup{
-  clear-aux ,
+  % clear-aux ,
   path = exercises
 }
 
@@ -724,11 +727,11 @@
 }
 \newcommand*\listexamplefiles{%
   \def\xsim@example@texfile@path##1{./examples/xsim.##1.tex}%
-  \def\xsim@example@pdffile@path##1{./examples/{xsim.##1}.pdf}%
+  \def\xsim@example@pdffile@path{./examples/xsim}%
   \def\xsim@example@desc##1{\csuse{xsim@example@texfile@desc@##1}}%
   \def\xsim@example@title##1{%
-    Example~\theexamplefile\ \xsim@example@desc{##1}
-    \\Links: \xsim@example@links{##1} (\code{xsim.##1.tex})%
+    Example~\theexamplefile: \xsim@example@desc{##1}
+    \\Links: \xsim@example@links{##1}\hfill File: \code{xsim.##1.tex}%
   }%
   \def\xsim@example@bookmark##1{Example~\theexamplefile\ (\xsim@example@desc{##1})}%
   \def\do##1{%
@@ -739,30 +742,30 @@
       sidebyside gap=1em,
       lower separated=false,
       bottom=1mm,
-      % rightlower=0pt,
-      % halign lower=flush right,
-      % clip lower,
       title=\xsim@example@title{##1}%
     ]
     \bookmark[level=2,dest=examplefile.\arabic{examplefile}]{\xsim@example@bookmark{##1}}%
     \lstinputlisting[style=cnltx,firstline=7,lastline=15,firstnumber=7]{\xsim@example@texfile@path{##1}}
     \tcblower
     \fbox{%
       \href
-        {\xsim@example@pdffile@path{##1}}
+        {\xsim@example@pdffile@path.##1.pdf}
         {%
           \includegraphics[
+            type=pdf,
+            ext=.##1.pdf,
+            read=.##1.pdf,
             pagebox=cropbox,
             viewport=4.5cm 18.6cm 8.7cm 23cm,
-            clip]{\xsim@example@pdffile@path{##1}}%
+            clip]{\xsim@example@pdffile@path}%
         }%
     }%
     \end{cnltxcode}
   }%
   \dolistloop\xsim@examplefiles
 }
 
-\xsim@add@example{blanks}{Creat blank lines}
+\xsim@add@example{blanks}{Create blank lines}
 \xsim@add@example{boxed-headings}{Put headings in a box}
 \xsim@add@example{code-and-output}{Create code examples}
 \xsim@add@example{collections}{How to use collections}
@@ -833,6 +836,7 @@
 \xsim@add@version{0.10a} {2017-10-04}
 \xsim@add@version{0.11}  {2018-02-12}
 \xsim@add@version{0.12}  {2019-09-26}
+\xsim@add@version{0.13}  {2019-10-06}
 
 % ----------------------------------------------------------------------------
 \endinput

doc/xsim_manual.tex

@@ -129,10 +129,10 @@ \subsection{Package Options}\label{sec:package-options}
     The \option{final} option automatically disables this option.  See also
     sections~\vref{sec:how-exerc-envir} and~\vref{sec:resolve-getting}.
   \opt{no-files}
-    \sinceversion{0.12a}This option prevents \xsim\ from writing the exercises
+    \sinceversion{0.13}This option prevents \xsim\ from writing the exercises
     and solutions to external files.  This will keep your working folder
     ``clean'' but will also prevent using verbatim material in exercises and
-    solutions and will probably slow processing further down.  \emph{This
+    solutions and will possibly slow processing further down.  \emph{This
       option is considered experimental.  Feedback is very welcome.}
 \end{options}
 
@@ -305,6 +305,19 @@ \section{How the Exercise Environments Work}\label{sec:how-exerc-envir}
   \end{exercise}
 \end{sourcecode}
 
+If\sinceversion{0.13} you don't like all the external files and the problems
+which come with them \emph{and} if you don't need any verbatim or similar
+material inside the exercises and solutions then you can use the following
+package option:
+\begin{options}
+  \opt{no-files}
+    This option prevents \xsim\ from writing the exercises and solutions to
+    external files.  This will keep your working folder ``clean'' but will
+    also prevent using verbatim material in exercises and solutions and will
+    possibly slow processing further down.  \emph{This option is considered
+      experimental.  Feedback is very welcome.}
+\end{options}
+
 \begin{bewareofthedog}
   \xsim\ writes a lot of stuff to the auxfile for re-using information on
   subsequent compilations.  If you add exercises, change properties \etc\ it