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To: vim_dev@googlegroups.com
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Subject: Patch 7.4.158
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Fcc: outbox
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From: Bram Moolenaar <Bram@moolenaar.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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------------
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Patch 7.4.158 (after 7.4.045)
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Problem:    Pattern containing \zs is not handled correctly by substitute().
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Solution:   Change how an empty match is skipped. (Yukihiro Nakadaira)
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Files:	    src/eval.c, src/testdir/test80.in, src/testdir/test80.ok
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*** ../vim-7.4.157/src/eval.c	2014-01-14 19:44:30.000000000 +0100
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--- src/eval.c	2014-01-23 19:25:23.199796533 +0100
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***************
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*** 24365,24371 ****
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      garray_T	ga;
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      char_u	*ret;
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      char_u	*save_cpo;
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!     int		zero_width;
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      /* Make 'cpoptions' empty, so that the 'l' flag doesn't work here */
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      save_cpo = p_cpo;
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--- 24365,24371 ----
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      garray_T	ga;
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      char_u	*ret;
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      char_u	*save_cpo;
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!     char_u	*zero_width = NULL;
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      /* Make 'cpoptions' empty, so that the 'l' flag doesn't work here */
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      save_cpo = p_cpo;
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***************
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*** 24382,24387 ****
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--- 24382,24400 ----
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  	tail = str;
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  	while (vim_regexec_nl(&regmatch, str, (colnr_T)(tail - str)))
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  	{
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+ 	    /* Skip empty match except for first match. */
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+ 	    if (regmatch.startp[0] == regmatch.endp[0])
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+ 	    {
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+ 		if (zero_width == regmatch.startp[0])
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+ 		{
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+ 		    /* avoid getting stuck on a match with an empty string */
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+ 		    *((char_u *)ga.ga_data + ga.ga_len) = *tail++;
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+ 		    ++ga.ga_len;
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+ 		    continue;
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+ 		}
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+ 		zero_width = regmatch.startp[0];
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+ 	    }
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+ 
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  	    /*
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  	     * Get some space for a temporary buffer to do the substitution
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  	     * into.  It will contain:
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***************
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*** 24404,24420 ****
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  	    (void)vim_regsub(&regmatch, sub, (char_u *)ga.ga_data
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  					  + ga.ga_len + i, TRUE, TRUE, FALSE);
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  	    ga.ga_len += i + sublen - 1;
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- 	    zero_width = (tail == regmatch.endp[0]
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- 				    || regmatch.startp[0] == regmatch.endp[0]);
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  	    tail = regmatch.endp[0];
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  	    if (*tail == NUL)
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  		break;
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- 	    if (zero_width)
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- 	    {
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- 		/* avoid getting stuck on a match with an empty string */
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- 		*((char_u *)ga.ga_data + ga.ga_len) = *tail++;
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- 		++ga.ga_len;
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- 	    }
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  	    if (!do_all)
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  		break;
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  	}
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--- 24417,24425 ----
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*** ../vim-7.4.157/src/testdir/test80.in	2013-09-29 21:11:00.000000000 +0200
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--- src/testdir/test80.in	2014-01-23 19:24:30.487795084 +0100
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***************
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*** 176,181 ****
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--- 176,198 ----
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  TEST_10:
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  STARTTEST
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+ :set magic&
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+ :set cpo&
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+ :$put =\"\n\nTEST_10:\"
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+ :let y = substitute('123', '\zs', 'a', 'g')             | $put =y
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+ :let y = substitute('123', '\zs.', 'a', 'g')            | $put =y
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+ :let y = substitute('123', '.\zs', 'a', 'g')            | $put =y
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+ :let y = substitute('123', '\ze', 'a', 'g')             | $put =y
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+ :let y = substitute('123', '\ze.', 'a', 'g')            | $put =y
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+ :let y = substitute('123', '.\ze', 'a', 'g')            | $put =y
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+ :let y = substitute('123', '1\|\ze', 'a', 'g')          | $put =y
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+ :let y = substitute('123', '1\zs\|[23]', 'a', 'g')      | $put =y
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+ /^TEST_11
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+ ENDTEST
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+ 
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+ TEST_11:
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+ 
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+ STARTTEST
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  :/^Results/,$wq! test.out
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  ENDTEST
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*** ../vim-7.4.157/src/testdir/test80.ok	2013-09-29 21:11:00.000000000 +0200
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--- src/testdir/test80.ok	2014-01-23 19:24:35.691795227 +0100
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***************
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*** 115,117 ****
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--- 115,128 ----
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  TEST_9:
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  XXx
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+ 
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+ 
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+ TEST_10:
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+ a1a2a3a
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+ aaa
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+ 1a2a3a
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+ a1a2a3a
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+ a1a2a3
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+ aaa
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+ aa2a3a
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+ 1aaa
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*** ../vim-7.4.157/src/version.c	2014-01-23 18:12:44.695676751 +0100
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--- src/version.c	2014-01-23 19:27:21.611799787 +0100
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***************
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*** 740,741 ****
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--- 740,743 ----
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  {   /* Add new patch number below this line */
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+ /**/
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+     158,
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  /**/
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-- 
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$ echo pizza > /dev/oven
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 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
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///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///