Fix a bug in which the user's choice to Cancel was not recognized. This was caused by the standard (and correct) behavior of the shell to discard the return status of lvalue-operands in a pipe-chain.
Fix a bug in which the user's choice to Cancel was not recognized. This was
caused by the standard (and correct) behavior of the shell to discard the
return status of lvalue-operands in a pipe-chain.

The solution is to not pipe the file-acquisition directly into sort(1) but
instead store the output (allowing immediate testing of the return status)
and later sort it.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase