rsynth - Text-to-Speech (Formant Synth)

I use rsynth to convert text to phonemes. It would be useful to change the
behaviour here. When I have a text file

hello world

I would expect the output
Guessing "hello"
[ here hello as phonemes ]
Guessing "world"
[ here worlds as phonemes ]

not like (current behaviour)
Guessing "hello"
Guessing "world"
[ here hello as phonemes SPACE here worlds as phonemes ]

I made an ugly but efficient patch for myself (changing say_file function
-- "while" loop now contains whole code to the end of the function) but
argument-switch would be more useful.

Btw. thank you for a great tool.