Name
getcharindex -- convert from byte to character index (V7.0)
Synopsis
int idx = getcharindex(const char *s, int byteindex);
Function
Returns the character index of the byte position inside s specified by byteindex. Both indices are counted from 0. String s must be a valid UTF-8 string and byteindex must point to a valid byte index inside s.

Designer compatibility
Unsupported

Inputs
s
input string
byteindex
byte index to convert to characters
Results
idx
character index at the specified byte offset
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