Unicode.utf8FindPrevChar

Given a position @p with a UTF-8 encoded string @str, find the start of the previous UTF-8 character starting before @p. Returns %NULL if no UTF-8 characters are present in @str before @p.

@p does not have to be at the beginning of a UTF-8 character. No check is made to see if the character found is actually valid other than it starts with an appropriate byte.

struct Unicode
static
string
utf8FindPrevChar
(
string str
,
string p
)

Parameters

str string

pointer to the beginning of a UTF-8 encoded string

p string

pointer to some position within @str

Return: a pointer to the found character or %NULL.

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