fill-single-char-nobreak-p

fill-single-char-nobreak-p is a compiled Lisp function in `fill.el'.

(fill-single-char-nobreak-p)

Return non-nil if a one-letter word is before point.
This function is suitable for adding to the hook `fill-nobreak-predicate',
to prevent the breaking of a line just after a one-letter word,
which is an error according to some typographical conventions.