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legacy_coding(3x) — Linux manual page

legacy_coding(3X)legacy_coding(3X)

NAME        top

use_legacy_coding- override locale-encoding checks

SYNOPSIS        top

#include <curses.h>int use_legacy_coding(intlevel);

DESCRIPTION        top

       Theuse_legacy_codingfunction is an extension to the curses       library.  It allows the caller to change the result ofunctrl, 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.       Thelevel parameter controls the result:              0    the library functions normally, rendering nonprinting                   characters as described inunctrl.              1    the library ignoresisprintffor codes in the range                   160-255.              2    the library ignoresisprintffor codes in the range                   128-255.  It also modifies the output ofunctrl,                   showing codes in the range 128-159 as is.

RETURN VALUE        top

       If the screen has not been initialized, or thelevel parameter is       out of range, the function returnsERR.  Otherwise, it returns the       previous level:0,1or2.

PORTABILITY        top

       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.

SEE ALSO        top

unctrl(3X).

AUTHOR        top

       Thomas Dickey (to support lynx's font-switching feature).

COLOPHON        top

       This page is part of thencurses (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 isnot part of the original manual page), send a mail to       man-pages@man7.orglegacy_coding(3X)

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