:sig
function file_tell(handle : u64) s64

:params
handle : handle from `file_open`

:returns
The current byte offset.

:content
`file_tell` returns the current position for a file handle.

:example capy render
var handle := file_open("/tmp/doc-tell.txt", "w")
file_write(handle, "hello")
print(file_tell(handle), "\n")
file_close(handle)

:see-group
file-handles
