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+% This macro source file is from the four volume series
+% "TeX in Practice" by Stephan von Bechtolsheim, published
+% 1993 by Springer-Verlag, New York.
+% Copyright 1993 Stephan von Bechtolsheim.
+% No warranty or liability is assumed.
+% This macro may be copied freely if no fees other than
+% media cost or shipping charges are charged and as long
+% as this copyright and the following source code itself
+% is not changed. Please see the series for further information.
+%
+% Version: 1.0
+% Date: May 1, 1993
+%
+%
+% This source code is documented in 29.3.3.1, p. III-511.
+% Original source in file "io2.TEX", starting line 1192.
+\wlog{L: "vwrt-mac.tip" ["io2.TEX," l. 1192, p. III-511]}%
+% This file DOES belong to format "texip."
+\InputD{verbwr.tip}
+\InputD{defauarg.tip}
+\InputD{verb-mac.tip}
+\catcode`\@ = 11
+\newwrite\@VStream
+\newif\if@VStreamOpen
+\@VStreamOpenfalse
+\newcount\@VerbWriteCount
+\@VerbWriteCount = 0
+\def\BeginVerbWrite #1#2{%
+ \global\advance\@VerbWriteCount by 1
+ \wlog{\string\BeginVerbWrite: [\the\@VerbWriteCount]}%
+ \DefaultArg{\@VerbWriteBaseName}{#1}{\jobname}%
+ \DefaultArg{\@VerbWriteFileExt}{#2}{ver}%
+ \xdef\@VerbWriteFileName{\@VerbWriteBaseName.\@VerbWriteFileExt}%
+ \if@VStreamOpen
+ \errmessage{\string\BeginVerbWrite: ERROR, file still open.}%
+ \fi
+ \OpenVerbWrFile{\@VerbWriteBaseName}{\@VerbWriteFileExt}%
+ {\@VStream}%
+ \global\@VStreamOpentrue
+ \BeginVerbWr{\@VStream}{\EndVerbWrite}%
+}
+\def\CloseVerbWriteFile{%
+ \if@VStreamOpen
+ \CloseVerbWrFile{\@VStream}%
+ \global\@VStreamOpenfalse
+ \fi
+}
+\def\AppendVerbWrite{%
+ \wlog{\string\AppendVerbWrite: [\the\@VerbWriteCount]}%
+ \if@VStreamOpen
+ \else
+ \errmessage{\string\AppendVerbWrite: no file open.}%
+ \fi
+ \xdef\@VerbWriteFileName{\@VerbWriteBaseName.\@VerbWriteFileExt}%
+ \BeginVerbWr{\@VStream}{\EndVerbWrite}%
+}
+\def\VerbAsVerb{%
+ \CloseVerbWriteFile
+ {%
+ \CaretTabtrue
+ \ListVerb{\@VerbWriteFileName}%
+ }%
+}
+\def\VerbAsSource{%
+ \CloseVerbWriteFile
+ \input \@VerbWriteFileName \relax
+}
+\catcode`\@ = 12