* syntax.c (Fskip_syntax_backward): Doc clarification.

Fixes: debbugs:15115

1 files changed, 2 insertions, 1 deletions

diff --git a/src/syntax.c b/src/syntax.c
index 12575bfa3f..f2451332b1 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -1532,7 +1532,8 @@ DEFUN ("skip-syntax-backward", Fskip_syntax_backward, Sskip_syntax_backward, 1,
 SYNTAX is a string of syntax code characters.
 Stop on reaching a char whose syntax is not in SYNTAX, or at position LIM.
 If SYNTAX starts with ^, skip characters whose syntax is NOT in SYNTAX.
-This function returns the distance traveled, either zero or negative.  */)
+This function returns either zero or a negative number, and the absolute value
+of this is the distance traveled.  */)
   (Lisp_Object syntax, Lisp_Object lim)
 {
   return skip_syntaxes (0, syntax, lim);