The example for volt list is as follows:
$ volt list -f '{{ range .Profiles }}{{ if eq $.CurrentProfileName .Name }}{{ range .ReposPath }}{{ . }}{{ end }}{{ end }}{{ end }}'
which will print all the plugins for the current profile in a single continous line. I advise the following command replace it:
$ volt list -f '{{ range .Profiles }}{{ if eq $.CurrentProfileName .Name }}{{ range .ReposPath }}{{ println . }}{{ end }}{{ end }}{{ end }}'

which gives one plugin per line output.