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+/*************************************************************************
+ *
+ * $Id: doc_scanf.h,v 1.1 2001/12/27 17:29:20 breese Exp $
+ *
+ * Copyright (C) 2001 Bjorn Reese and Daniel Stenberg.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
+ * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
+ *
+ ************************************************************************/
+
+/** @addtogroup Scanf Formatted Scanning Functions.
+Variations of formatted scanning functions.
+
+@b SYNOPSIS
+
+@verbatim
+cc ... -ltrio -lm
+
+#include <trio.h>
+@endverbatim
+
+@b DESCRIPTION
+
+This documentation is incomplete.
+The documentation of the scanf family in [C99] and [UNIX98] also applies
+to the trio counterparts.
+
+@b SCANNING
+
+The scanning is controlled by the format string.
+The format string can contain normal text and conversion indicators.
+The normal text can be any character except the nil character
+(\000) and the percent character (\045 = '\%').
+Conversion indicators consists of an indication character (%), followed by
+zero or more conversion modifiers, and exactly one conversion specifier.
+
+@b Modifiers
+
+@em Positional ( @c 9$ ) [UNIX98]
+
+See @ref trio_printf.
+
+@b Specifiers
+
+@em Percent ( @c % )
+
+@em Character ( @c c )
+
+@em Decimal ( @c d )
+
+@em Floating-point ( @c a, @c A, @c e, @c E, @c f, @c F, @c g, @c G )
+
+@em Integer ( @c i )
+
+@em Count ( @c n )
+
+@em Octal ( @c o )
+
+@em Pointer ( @c p )
+
+@em String ( @c s )
+
+@em Unsigned ( @c u )
+
+@em Hex ( @c x, @c X )
+
+@em Scanlist ( @c [] )
+
+Scanlist Exclusion (@c ^ )
+
+Scanlist Range ( @c - ) [TRIO]
+
+@li Only increasing ranges, i.e. @c [a-b], but not @c [b-a].
+@li Transitive ranges, ie. @c [a-b-c] equals @c [a-c].
+@li Trailing minus, ie. @c [a-] is interpreted as an @c a and a @c -.
+@li Duplicates are ignored.
+
+Scanlist Equivalence Class Expression ( @c [= @c =] ) [TRIO]
+
+Locale dependent (LC_COLLATE).
+Only one expression can appear inside the delimiters.
+@li @c [=a=] All letters in the same equivalence class as the letter @c a.
+@verbatim
+  trio_scanf("%[[=a=]b]\n", buffer);
+  trio_scanf("%[[=a=][=b=]]\n", buffer);
+@endverbatim
+
+Scanlist Character Class Expression ( @c [: @c :]) [TRIO]
+Locale dependent (LC_CTYPE).
+Only one expression can appear inside the delimiters.
+@li @c [:alnum:] Same as @c [:alpha:] and @c [:digit:]
+@li @c [:alpha:] Same as @c [:lower:] and @c [:upper:]
+@li @c [:cntrl:] Control characters
+@li @c [:digit:] Decimal digits
+@li @c [:graph:] Printable characters except space
+@li @c [:lower:] Lower case alphabetic letters
+@li @c [:print:] Printable characters
+@li @c [:punct:] Punctuation
+@li @c [:space:] Whitespace characters
+@li @c [:upper:] Upper case alphabetic letters
+@li @c [:xdigit:] Hexadecimal digits
+@verbatim
+  trio_scanf("%[[:alnum:]]\n", buffer);
+  trio_scanf("%[[:alpha:][:digit:]]\n", buffer);
+@endverbatim
+
+@b RETURN @b VALUES
+
+@b SEE @b ALSO
+
+@ref trio_printf
+
+*/