The option of prepending a '-' to the log profiler output
filename is not supported by the code - remove it.
If \f[I]OUTSPEC\f[] begins with a \f[I]|\f[] character, execute the
rest as a program and feed the data to its standard input.
.IP \[bu] 2
-if \f[I]OUTSPEC\f[] begins with a \f[I]-\f[] character, use the
-rest of OUTSPEC as the filename, but force overwrite any existing
-file by that name
.IP \[bu] 2
otherwise write the data the the named file: note that is a file by
that name already exists, a warning is issued and profiling is