Doing this meant that the escaping functionality got used in three places, so it was extracted into a generalised function in its own module.
This is slighly slower for the case where escaped characters are displayed in the same colour as the displayable characters, which happens when listing a directory’s name when recursing. Optimise this, yeah?
These extra tests are intended to be run from a Vagrant VM that has already had its environment set up -- see the section in the README for more details.
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