Made ISLT comment more in line with the current text

embg · embg · commit e19728ed3919 · 2017-03-07T21:02:00.000-07:00
diff --git a/Objects/listobject.c b/Objects/listobject.c
@@ -1031,7 +1031,10 @@ sortslice_advance(sortslice *slice, Py_ssize_t n)
         slice->values += n;
 }
 
-/* Macros for comparing keys: */
+/* Comparison function: compare_funcs.key_compare, which is set at run-time in 
+ * listsort_impl to optimize for various special cases.
+ * Returns -1 on error, 1 if x < y, 0 if x >= y.
+ */
 #define ISLT(X, Y) ((*compare_funcs.key_compare)(X, Y, compare_funcs))
 
 /* Compare X to Y via "<".  Goto "fail" if the comparison raises an
