wcwidth
wcwidth is a function defined in the C standard library that returns the number of column positions a wide character wc will occupy when displayed in a terminal. It is declared in wchar.h and is locale dependent; the current LC_CTYPE affects how widths are computed. The function is commonly used when rendering or wrapping text that contains wide or non-ASCII characters.
Return values and behavior: If wc is the null wide character L'\0', wcwidth returns 0. If the
Related function: wcswidth computes the total display width of a null-terminated wide string (or up to a
Implementation and caveats: The results rely on the C library’s Unicode data and the active locale; different