#463 --output-prefix not working for input-files in sub-directories

[Jeythe Key]

Hi,
flac --output-prefix='hi' someDir/file.wav
does not work. Accordingly, something like
flac --output-prefix='/absolute/path/to/output/' **/*.wav
also does not work, but would be a major use-case for me. What works is either omitting the --output-prefix option or cd to the dir of the input file(s).
The error message is:

file.WAV: ERROR initializing encoder
              init_status = FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR
              state = FLAC__STREAM_ENCODER_IO_ERROR

An error occurred opening the output file; it is likely that the output
directory does not exist or is not writable, the output file already exists and
is not writable, or the disk is full.