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-rw-r--r--lisp/textmodes/fill.el4
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/textmodes/fill.el b/lisp/textmodes/fill.el
index 9da8519d12d..59588d20bfd 100644
--- a/lisp/textmodes/fill.el
+++ b/lisp/textmodes/fill.el
@@ -753,7 +753,9 @@ space does not end a sentence, so don't break a line there."
(fill-paragraph arg)))
(defun fill-paragraph (arg)
- "Fill paragraph at or after point. Prefix ARG means justify as well.
+ "Fill paragraph at or after point.
+
+If ARG is non-nil (interactively, with prefix argument), justify as well.
If `sentence-end-double-space' is non-nil, then period followed by one
space does not end a sentence, so don't break a line there.
the variable `fill-column' controls the width for filling.