Linux cli command wcwidth

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NAME 🖥️ wcwidth 🖥️

determine columns needed for a wide character

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#define _XOPEN_SOURCE /* See feature_test_macros(7) */
#include <wchar.h>
int wcwidth(wchar_t c);

DESCRIPTION

The wcwidth() function returns the number of columns needed to represent the wide character c. If c is a printable wide character, the value is at least 0. If c is null wide character (L’�’), the value is 0. Otherwise, -1 is returned.

RETURN VALUE

The wcwidth() function returns the number of column positions for c.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

wcwidth()

Thread safetyMT-Safe locale

STANDARDS

POSIX.1-2008.

HISTORY

POSIX.1-2001.

Note that before glibc 2.2.5, glibc used the prototype

int wcwidth(wint_t c);

NOTES

The behavior of wcwidth() depends on the LC_CTYPE category of the current locale.

SEE ALSO

iswprint(3), wcswidth(3)

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