Boxed Verbatim

Verbatim within TEX box.

<..fix fancyvrb..>+
 \def\FV@BVerbatimBegin{%
   \begingroup
     \let\a:fancyvrb\empty \IgnorePar
     \FV@UseKeyValues
     \FV@BeginVBox
     \let\FV@ProcessLine\FV@BProcessLine
     \FV@FormattingPrep
     \FV@ObeyTabsInit \a:BVerbatimInput
 }%
 \def\FV@BVerbatimEnd{\b:BVerbatimInput \FV@EndVBox\endgroup}
 \def\FV@BProcessLine#1{\hbox{\FancyVerbFormatLine
    {\c:BVerbatimInput#1\d:BVerbatimInput}}}
 \NewConfigure{BVerbatimInput}{4}
 -_-_-