optional argument now LaTeX like; version and date

grabbox.dtx

@@ -57,7 +57,7 @@ and the derived files           grabbox.pdf and
 %<*driver>
 \ProvidesFile{grabbox.dtx}
   [%
-    \csname grabbox@date\endcsname\ 
+    \csname grabbox@date\endcsname\space
     utilities to get an argument as a box%
   ]
 \expandafter\def\csname @classoptionslist\endcsname{}
@@ -77,10 +77,13 @@ and the derived files           grabbox.pdf and
 \end{document}
 %</driver>
 %<*pkg>
-\newcommand*\grabbox@date{2018-10-18}
-\newcommand*\grabbox@version{1.1}
+\newcommand*\grabbox@date{2018-11-29}
+\newcommand*\grabbox@version{1.2}
 \ProvidesPackage{grabbox}
-  [\grabbox@date\ v\grabbox@version\ utilities to get an argument as a box]
+  [%
+    \grabbox@date\space v\grabbox@version\space utilities to get an argument as
+    a box%
+  ]
 %</pkg>
 % \fi
 %
@@ -104,7 +107,9 @@ and the derived files           grabbox.pdf and
 % exact contents of an argument but only for that contents typeset
 % representation and its dimensions. In that case I personally dislike the fact
 % that those arguments couldn't contain verbatim material if coded straight
-% forward. Thus the macros distributed hereby came into existence.
+% forward for macros. For environments this is quite easy to create thanks to
+% \env{lrbox}, for macros this approach unfortunately doesn't work without the
+% enduser's cooperation. Thus the macros distributed hereby came into existence.
 %
 % This package provides \cs{grabbox} to grab an argument inside of a box. The
 % used mechanism allows category code changes in that argument as long as it is
@@ -205,13 +210,13 @@ and the derived files           grabbox.pdf and
 %     \end{tabular}%
 %     \endgroup
 %   }%
-% \examplecmd{Hi,}{my}{\verb|name|}{Steve!}
+% \examplecmd{Hi,}{my}{\verb|\name|}{Steve!}
 % \end{center}
 % One can see that \verb|\sffamily is| of \meta{inject post} is not affected by
 % the |\itshape| in \meta{inject pre}. The used code to generate that table was:
 %
 % \begin{verbatim}
-% \examplecmd{Hi,}{my}{\verb|name|}{Steve!}
+% \examplecmd{Hi,}{my}{\verb|\name|}{Steve!}
 % \end{verbatim}
 %
 % \section{Useful Example?}
@@ -297,35 +302,15 @@ and the derived files           grabbox.pdf and
 \long\def\grabbox@afterfi#1\fi{\fi#1}
 \long\def\grabbox@afterelsefiA\else#1\fi#2#3{\fi#2}
 \long\def\grabbox@afterfiB\fi#1#2{\fi#2}
-\long\def\grabbox@check@bracket #1[#2\endgrabbox@check@bracket
-  {%
-    \if\relax\detokenize{#2}\relax
-      \grabbox@afterelsefiA
-    \else
-      \grabbox@afterfiB
-    \fi
-  }
 \grabbox@def\grabbox@opt#1#2%
   {%
     \@ifnextchar[
       {\grabbox@opt@get#1#2}
       {\def#1{}#2}%
   }
-\long\def\grabbox@opt@get#1#2[#3]%
-  {%
-    \grabbox@opt@get@a{#3}#1#2%
-  }
-\protected\long\def\grabbox@opt@get@a#1#2#3%
-  {%
-    \grabbox@check@bracket #1[\endgrabbox@check@bracket
-      {\def#2{#1}#3}
-      {\grabbox@opt@get@b#2#3{#1]}}%
-  }
-\protected\long\def\grabbox@opt@get@b#1#2#3#4]%
+\protected\long\def\grabbox@opt@get#1#2[#3]%
   {%
-    \grabbox@check@bracket #4[\endgrabbox@check@bracket
-      {\def#1{#3#4}#2}
-      {\grabbox@opt@get@b#1#2{#3#4]}}%
+    \def#1{#3}#2%
   }
 \grabbox@def\grabbox@unpack
   {%