let src_enc = if is_gzip fname then `Gzipped else `Normal in
let enc = parse_enc req in
let fname, cleanup = convert_file ~from_enc:src_enc ~to_enc:enc fname in
let contenc = if enc = `Gzipped then Some "x-gzip" else None in
let patch_fun =
let src_enc = if is_gzip fname then `Gzipped else `Normal in
let enc = parse_enc req in
let fname, cleanup = convert_file ~from_enc:src_enc ~to_enc:enc fname in
let contenc = if enc = `Gzipped then Some "x-gzip" else None in
let patch_fun =