On second thoughts JD, can’t use strlen or sqlite3_value_bytes in case
values(1) contains more than a single unicode character. This looks OK.
# define CHARLEN(x) !(x & 128) ? 1 : (x & 16 ? 4 : (x & 32 ? 3 : 2))
char *c = (char *)sqlite3_value_text(values[0]);
char *Sep = (char *)sqlite3_value_text(values[1]);
int Count=0, Len, SepLen = CHARLEN(*Sep);
while (*c)
{
if ((Len = CHARLEN(*c)) == SepLen && memcmp(c, Sep, Len)==0) Count++; //
at start of Sep
c += Len;
}
sqlite3_result_int(ctx, Count);
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