Add comment of arbitrary chosen constant 59.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/abbrev.c b/src/abbrev.c
index 5964909261..54e0e8464b 100644
--- a/src/abbrev.c
+++ b/src/abbrev.c
@@ -89,6 +89,7 @@ DEFUN ("make-abbrev-table", Fmake_abbrev_table, Smake_abbrev_table, 0, 0, 0,
        doc: /* Create a new, empty abbrev table object.  */)
      ()
 {
+  /* The value 59 is arbitrary chosen prime number.  */
   return Fmake_vector (make_number (59), make_number (0));
 }