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(int level);

DESCRIPTION         top

       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

              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.

RETURN VALUE         top

       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.

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


AUTHOR         top

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

COLOPHON         top

       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 2023-06-23.  (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