add comment to num_comb_exp_check member of struct re_pattern_buffer

diff --git a/src/oniguruma.h b/src/oniguruma.h
index a8c40305da62a1781fe457f9ef9d2158ed7f98a4..3b204de9dc9bbc4b30334e44ab23ddb308d77fa7 100644 (file)
--- a/src/oniguruma.h
+++ b/src/oniguruma.h
@@ -671,7 +671,7 @@ typedef struct re_pattern_buffer {
   int num_mem;                   /* used memory(...) num counted from 1 */
   int num_repeat;                /* OP_REPEAT/OP_REPEAT_NG id-counter */
   int num_null_check;            /* OP_EMPTY_CHECK_START/END id counter */
-  int num_comb_exp_check;        /* combination explosion check */
+  int num_comb_exp_check;        /* no longer used (combination explosion check) */
   int num_call;                  /* number of subexp call */
   unsigned int capture_history;  /* (?@...) flag (1-31) */
   unsigned int bt_mem_start;     /* need backtrack flag */