1 .\" Copyright (c) 2002 Tim J. Robbins
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25 .\" $FreeBSD: head/lib/libc/locale/wcwidth.3 133915 2004-08-17 04:56:03Z trhodes $
33 .Nd "number of column positions of a wide-character code"
39 .Fn wcwidth "wchar_t wc"
42 .Fn wcwidth_l "wchar_t wc" "locale_t locale"
48 functions determine the number of column positions required to
49 display the wide character
54 function takes an explicit
58 function uses the current global or per-thread locale.
64 functions return 0 if the
66 argument is a null wide character (L'\e0'),
70 otherwise they return the number of column positions the
73 This code fragment reads text from standard input and
74 breaks lines that are more than 20 column positions wide,
78 .Bd -literal -offset indent
83 while ((ch = getwchar()) != WEOF) {
85 if (w > 0 && column + w >= 20) {