Find the first position of any entries matching a prefix. To find the first position of a path inside a given folder, suffix the prefix with a '/'.
the address to which the position of the index entry is written (optional)
an existing index object
the prefix to search for
0 with valid value in at_pos; an error code otherwise
See Implementation
Find the first position of any entries matching a prefix. To find the first position of a path inside a given folder, suffix the prefix with a '/'.