To: vim_dev@googlegroups.com
Subject: Patch 7.3.1121
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------
 
Patch 7.3.1121
Problem:    New regexp engine: adding states that are not used.
Solution:   Don't add the states.
Files:	    src/regexp_nfa.c
 
 
*** ../vim-7.3.1120/src/regexp_nfa.c	2013-06-05 16:33:05.000000000 +0200
--- src/regexp_nfa.c	2013-06-05 16:47:27.000000000 +0200
***************
*** 3169,3174 ****
--- 3176,3182 ----
  	case NFA_SPLIT:
  	case NFA_NOT:
  	case NFA_NOPEN:
+ 	case NFA_SKIP_CHAR:
  	case NFA_NCLOSE:
  	case NFA_MCLOSE:
  	case NFA_MCLOSE1:
***************
*** 3192,3197 ****
--- 3200,3206 ----
  	case NFA_ZCLOSE8:
  	case NFA_ZCLOSE9:
  #endif
+ 	case NFA_ZEND:
  	    /* These nodes are not added themselves but their "out" and/or
  	     * "out1" may be added below.  */
  	    break;
***************
*** 3218,3223 ****
--- 3227,3233 ----
  	case NFA_ZOPEN8:
  	case NFA_ZOPEN9:
  #endif
+ 	case NFA_ZSTART:
  	    /* These nodes do not need to be added, but we need to bail out
  	     * when it was tried to be added to this list before. */
  	    if (state->lastlist[nfa_ll_index] == l->id)
***************
*** 4362,4371 ****
  
  	    case NFA_START_INVISIBLE:
  	    case NFA_START_INVISIBLE_BEFORE:
- 		/* If invisible match has a higher chance to fail, do it
- 		 * right away.  Otherwise postpone it until what follows is
- 		 * matching and causes addstate(nextlist, ..) to be called.
- 		 * This is indicated by the "pim" field. */
  		{
  		    nfa_pim_T *pim;
  		    int cout = t->state->out1->out->c;
--- 4372,4377 ----
***************
*** 4863,4874 ****
  			log_subsexpr(&nextlist->t[nextlist->n - 1].subs);
  #endif
  		    }
- 
  		}
  		break;
  	      }
  	    case NFA_SKIP:
! 	      /* charater of previous matching \1 .. \9 */
  	      if (t->count - clen <= 0)
  	      {
  		  /* end of match, go to what follows */
--- 4869,4879 ----
  			log_subsexpr(&nextlist->t[nextlist->n - 1].subs);
  #endif
  		    }
  		}
  		break;
  	      }
  	    case NFA_SKIP:
! 	      /* character of previous matching \1 .. \9  or \@> */
  	      if (t->count - clen <= 0)
  	      {
  		  /* end of match, go to what follows */
***************
*** 4892,4903 ****
  	      }
  	      break;
  
- 	    case NFA_SKIP_CHAR:
- 	    case NFA_ZSTART:
- 	    case NFA_ZEND:
- 		/* TODO: should not happen? */
- 		break;
- 
  	    case NFA_LNUM:
  	    case NFA_LNUM_GT:
  	    case NFA_LNUM_LT:
--- 4897,4902 ----
*** ../vim-7.3.1120/src/version.c	2013-06-05 16:33:05.000000000 +0200
--- src/version.c	2013-06-05 16:50:39.000000000 +0200
***************
*** 730,731 ****
--- 730,733 ----
  {   /* Add new patch number below this line */
+ /**/
+     1121,
  /**/
 
-- 
Where do you want to crash today?
 
 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///