file-position[procedure] file-position port [n]
ChezScheme: gets/sets the position of the port in the
file which the port refers.
See also file-length.
Scsh has seek and tell. Guile has seek and ftell.
Bigloo has input-port-position and
output-port-position.
Gauche has port-tell and port-seek.
[procedure] file-position port-or-fd
Chicken: gets the current file position.
See also file-size, set-file-position!.
Scsh and Guile have seek.
Bigloo has input-port-position and
output-port-position.
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