[CM] REPL hangs after sending expression

[David O'Toole]

After sending this expression (either via "snd -b test2.scm", or
interactively in emacs inferior snd process) Snd REPL seems to hang
and not respond to further text. When run through shell, the .wav
files are written but input still hangs and return value is never
shown; when run through emacs, the .wav files are not written and the
expression does not seem to execute or show a return value. What am I
doing wrong? This happens with snd 19.8 as well as snd 19.7.

(begin
 (load "jcrev.scm")
 (with-sound
  (:output "/home/dto/sessions/violin.mosaic/.resource-3.wav"
:channels 2 :reverb jc-reverb :header-type mus-riff :sample-type
mus-lshort :scaled-to 0.2)
  (fm-violin 0.0 1.5 155.56349186104046 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 2.5649999999999995 0.5 293.6647679174076 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 3.0649999999999995 1.0 220.0 0.45)
  (fm-violin 4.0649999999999995 0.25 293.6647679174076 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 4.847499999999999 1.0 329.6275569128699 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 5.847499999999999 2.0 246.94165062806206 0.45 :fm-index
1.42 :noise-amount 0.08))
 (with-sound
  (:output "/home/dto/sessions/violin.mosaic/.resource-2.wav"
:channels 2 :reverb jc-reverb :header-type mus-riff :sample-type
mus-lshort :scaled-to 0.2)
  (fm-violin 0.0 1.5 87.30705785825097 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 1.5 1.0 65.40639132514966 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 3.0324999999999998 0.5 146.8323839587038 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 3.5324999999999998 1.0 110.0 0.45 :fm-index 0.82
:noise-amount 0.02)
  (fm-violin 4.5325 0.25 146.8323839587038 0.45 :fm-index 1.09
:noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 5.3149999999999995 1.0 164.81377845643496 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 6.3149999999999995 2.0 123.47082531403103 0.45 :fm-index
1.42 :noise-amount 0.08))
 (with-sound
  (:output "/home/dto/sessions/violin.mosaic/.resource-1.wav"
:channels 2 :reverb jc-reverb :header-type mus-riff :sample-type
mus-lshort :scaled-to 0.2)
  (fm-violin 0.0 1.5 622.2539674441618 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 2.5649999999999995 0.5 587.3295358348151 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 3.0649999999999995 1.0 440.0 0.45 :fm-index 0.82
:noise-amount 0.02)
  (fm-violin 4.0649999999999995 0.25 587.3295358348151 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 4.847499999999999 1.0 195.99771799087463 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 5.847499999999999 2.0 246.94165062806206 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 8.379999999999999 1.0 622.2539674441618 0.45 :fm-index
1.048 :fm1-rat 1.0)
  (fm-violin 10.445 0.5 587.3295358348151 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 10.945 1.0 880.0 0.45 :fm-index 1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 11.945 0.25 587.3295358348151 0.45 :fm-index 1.09
:noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 12.727500000000001 1.0 195.99771799087463 0.45 :fm-index
1.048 :fm1-rat 1.0)
  (fm-violin 13.727500000000001 2.0 246.94165062806206 0.45 :fm-index
1.048 :fm1-rat 1.0)
  (fm-violin 15.727500000000001 2.0 254.17759331190004 0.45 :fm-index
1.048 :fm1-rat 1.0)
  (fm-violin 17.7275 1.0 246.94165062806206 0.45 :fm-index 1.048 :fm1-rat 1.0))
 (with-sound
  (:output "/home/dto/sessions/violin.mosaic/.resource-0.wav"
:channels 2 :reverb jc-reverb :header-type mus-riff :sample-type
mus-lshort :scaled-to 0.2)
  (fm-violin 0.0 1.5 415.3046975799451 0.45 :fm-index 1.048 :fm1-rat 1.0)
  (fm-violin 2.5649999999999995 0.5 587.3295358348151 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 3.0649999999999995 1.0 415.3046975799451 0.45 :fm-index
0.82 :noise-amount 0.02)
  (fm-violin 4.0649999999999995 0.25 587.3295358348151 0.45 :fm-index
1.09 :noise-amount 0.05 :amp-env
             '(0 0 1.5468 1 2.0882 0.7 2.3202 1 98.4532 0.75 100.0 0))
  (fm-violin 4.847499999999999 1.0 329.6275569128699 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 5.847499999999999 2.0 246.94165062806206 0.45 :fm-index
1.42 :noise-amount 0.08)
  (fm-violin 8.379999999999999 1.0 195.99771799087463 0.45 :fm-index
1.048 :fm1-rat 1.0)))