sub_top_idx      2609 maint/gnulib/lib/regexec.c   Idx subexp_num, sub_top_idx;
sub_top_idx      2626 maint/gnulib/lib/regexec.c   for (sub_top_idx = 0; sub_top_idx < mctx->nsub_tops; ++sub_top_idx)
sub_top_idx      2629 maint/gnulib/lib/regexec.c       re_sub_match_top_t *sub_top = mctx->sub_tops[sub_top_idx];