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iswgraph - test for graphic wide character
int iswgraph(wint_t wc);
The iswgraph() function is the wide-character equivalent of the
isgraph(3) function. It tests whether wc is a wide character belonging
to the wide-character class "graph".
The wide-character class "graph" is a subclass of the wide-character
Being a subclass of the wide-character class "print", the wide-
character class "graph" is disjoint from the wide-character class
The wide-character class "graph" is disjoint from the wide-character
class "space" and therefore also disjoint from its subclass "blank".
The wide-character class "graph" contains all the wide characters from
the wide-character class "print" except the space character. It
therefore contains the wide-character classes "alnum" and "punct".
The iswgraph() function returns nonzero if wc is a wide character
belonging to the wide-character class "graph". Otherwise it returns
The behavior of iswgraph() depends on the LC_CTYPE category of the
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