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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | PORTABILITY | SEE ALSO | AUTHOR | COLOPHON |
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legacy_coding(3X) legacy_coding(3X)
use_legacy_coding - override locale-encoding checks
#include <curses.h>
int use_legacy_coding(int level);
The use_legacy_coding function is an extension to the curses
library. It allows the caller to change the result of unctrl, and
suppress related checks within the library that would normally
cause nonprinting characters to be rendered in visible form. This
affects only 8-bit characters.
The level parameter controls the result:
0 the library functions normally, rendering nonprinting
characters as described in unctrl.
1 the library ignores isprintf for codes in the range
160-255.
2 the library ignores isprintf for codes in the range
128-255. It also modifies the output of unctrl,
showing codes in the range 128-159 as is.
If the screen has not been initialized, or the level parameter is
out of range, the function returns ERR. Otherwise, it returns the
previous level: 0, 1 or 2.
This routine is specific to ncurses. It was not supported on
Version 7, BSD or System V implementations. It is recommended
that any code depending on ncurses extensions be conditioned using
NCURSES_VERSION.
unctrl(3X).
Thomas Dickey (to support lynx's font-switching feature).
This page is part of the ncurses (new curses) project.
Information about the project can be found at
⟨https://www.gnu.org/software/ncurses/ncurses.html⟩. If you have a
bug report for this manual page, send it to
bug-ncurses-request@gnu.org. This page was obtained from the
project's upstream Git mirror of the CVS repository
⟨https://github.com/mirror/ncurses.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2023-03-12.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
legacy_coding(3X)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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