Re: [comp.emacs] "Emacs" defined in Collins English Dictionary

[Juanma Barranquero]

Other words do still have the -en, though it is less identifiable as
the plural form of a singular noun: children, brethren.

There's a simplified explanation of the historical variation of
English plural forms in:

http://www.randomhouse.com/wotd/index.pperl?date=19990930

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