> FURTHER WARNING: This command is a work-in-progress and may yet contain bugs.
Purging and shunning are two entirely different things in fossil. Shunning is for removing "bad" content and purging is very specifically for use with the "bundle" command (a rarely-used option for submitting "drive-by patches" initially conceived as fossil's counterpart to pull-requests).
> FURTHER WARNING: This command is a work-in-progress and may yet contain bugs.