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diff -uNr arc-5.21m.orig/arcrun.c arc-5.21m/arcrun.c
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--- arc-5.21m.orig/arcrun.c	2005-09-21 18:39:57.000000000 +0200
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+++ arc-5.21m/arcrun.c	2005-10-08 12:27:46.000000000 +0200
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@@ -25,7 +25,6 @@
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 VOID	rempath(), openarc(), closearc(), arcdie();
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 int	readhdr(), match(), unpack();
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 static	VOID	runfile();
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-char	*strcat();
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 VOID
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 runarc(num, arg)		/* run file from archive */