Doc for fill-single-char-nobreak-p

* doc/emacs/text.texi (Fill Commands): Mention fill-single-char-nobreak-p.

* lisp/textmodes/fill.el (fill-single-char-nobreak-p): Doc tweak.

* etc/NEWS: Related edit.

1 files changed, 4 insertions, 4 deletions

diff --git a/lisp/textmodes/fill.el b/lisp/textmodes/fill.el
index 35cc5320250..dac74e758fa 100644
--- a/lisp/textmodes/fill.el
+++ b/lisp/textmodes/fill.el
@@ -330,10 +330,10 @@ places."
                    (eq (char-syntax (following-char)) ?w)))))))
 
 (defun fill-single-char-nobreak-p ()
-  "Return t if point is placed just after a 1-letter word.
-This is used in `fill-nobreak-predicate' to prevent breaking line just
-after a 1-letter word (usually conjunction or preposition) which is
-considered composition error in Polish and Czech typography."
+  "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 rules of typography."
   (save-excursion
     (skip-chars-backward " \t")
     (backward-char 2)