Yet Emacs is commonly run as a batch tool, whose output needs to be piped and parsed! For example, web sites which are generated via org-mode (I used to do this

Yet Emacs is commonly run as a batch tool, whose output needs to be piped and parsed! For example, web sites which are generated via org-mode (I used to do this, about a decade ago). My Emacs config has unit tests, which are run via a non-interactive command (since tests are meant to find problems, and I don't want those problems to 'infect' the Emacs process I'm using for work)