Include the legacy_coding(3) page which documents use_legacy_coding(),
probably missed at one update or another. Reported by Anthony Coulter, discussed with jmc.
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# $OpenBSD: Makefile,v 1.69 2016/07/04 18:01:44 guenther Exp $
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# $OpenBSD: Makefile,v 1.70 2016/09/16 17:24:20 nicm Exp $
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# Uncomment this to enable tracing in libcurses
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#CURSESTRACE=-DTRACE
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@ -87,7 +87,7 @@ MAN= curs_addch.3 curs_addchstr.3 curs_addstr.3 curs_attr.3 \
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curs_get_wstr.3 curs_in_wch.3 curs_in_wchstr.3 curs_ins_wch.3 \
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curs_ins_wstr.3 curs_inwstr.3 \
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default_colors.3 define_key.3 \
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key_defined.3 keybound.3 keyok.3 \
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key_defined.3 keybound.3 keyok.3 legacy_coding.3 \
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curses.3 \
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resizeterm.3 \
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term.5 term.7 termcap.3 terminfo.3 terminfo.5 \
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.\"***************************************************************************
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.\" Copyright (c) 2005,2006 Free Software Foundation, Inc. *
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.\" *
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.\" Permission is hereby granted, free of charge, to any person obtaining a *
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.\" copy of this software and associated documentation files (the *
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.\" "Software"), to deal in the Software without restriction, including *
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.\" without limitation the rights to use, copy, modify, merge, publish, *
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.\" distribute, distribute with modifications, sublicense, and/or sell *
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.\" copies of the Software, and to permit persons to whom the Software is *
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.\" furnished to do so, subject to the following conditions: *
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.\" *
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.\" The above copyright notice and this permission notice shall be included *
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.\" in all copies or substantial portions of the Software. *
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.\" *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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.\" *
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.\" Except as contained in this notice, the name(s) of the above copyright *
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.\" holders shall not be used in advertising or otherwise to promote the *
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.\" sale, use or other dealings in this Software without prior written *
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.\" authorization. *
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.\"***************************************************************************
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.\"
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.\" Author: Thomas E. Dickey
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.\"
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.\" $Id: legacy_coding.3,v 1.1 2016/09/16 17:24:20 nicm Exp $
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.TH legacy_coding 3 ""
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.SH NAME
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\fBuse_legacy_coding\fR \- use terminal's default colors
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.SH SYNOPSIS
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\fB#include <curses.h>\fP
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.sp
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\fBint use_legacy_coding(int level);\fP
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.SH DESCRIPTION
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The
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.I use_legacy_coding()
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function is an extension to the curses library.
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It allows the caller to change the result of \fBunctrl\fP,
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and suppress related checks within the library that would normally
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cause nonprinting characters to be rendered in visible form.
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This affects only 8-bit characters.
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.PP
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The \fIlevel\fP parameter controls the result:
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.RS
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.TP 5
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0
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the library functions normally,
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rendering nonprinting characters as described in \fBunctrl\fP.
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.TP
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1
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the library ignores \fBisprintf\fP for codes in the range 160-255.
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.TP
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2
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the library ignores \fBisprintf\fP for codes in the range 128-255.
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It also modifies the output of \fBunctrl\fP, showing codes in the
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range 128-159 as is.
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.RE
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.SH RETURN VALUE
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If the screen has not been initialized,
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or the \fIlevel\fP parameter is out of range,
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the function returns \fBERR\fP.
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Otherwise, it returns the previous level: \fB0\fP, \fB1\fP or \fB2\fP.
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.SH PORTABILITY
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This routine is specific to ncurses.
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It was not supported on Version 7, BSD or System V implementations.
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It is recommended that any code depending on ncurses extensions
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be conditioned using NCURSES_VERSION.
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.SH SEE ALSO
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\fBunctrl\fR(3).
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.SH AUTHOR
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Thomas Dickey (to support lynx's font-switching feature).
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.\"#
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.\"# The following sets edit modes for GNU EMACS
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.\"# Local Variables:
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.\"# mode:nroff
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.\"# fill-column:79
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.\"# End:
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