Patch 8.1.0499
Problem:    :2vimgrep causes an ml_get error
Solution:   Pass tomatch pointer instead of value. (Yegappan Lakshmanan)
Files:      src/ex_getln.c, src/quickfix.c, src/testdir/test_quickfix.vim


*** ../vim-8.1.0498/src/ex_getln.c      2018-09-30 21:43:17.187693348 +0200
--- src/ex_getln.c      2018-10-28 14:27:29.009350706 +0100
***************
*** 483,488 ****
--- 483,494 ----
      if (search_first_line == 0)
        // start at the original cursor position
        curwin->w_cursor = is_state->search_start;
+     else if (search_first_line > curbuf->b_ml.ml_line_count)
+     {
+       // start after the last line
+       curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
+       curwin->w_cursor.col = MAXCOL;
+     }
      else
      {
        // start at the first line in the range
*** ../vim-8.1.0498/src/quickfix.c      2018-10-21 18:47:39.622613657 +0200
--- src/quickfix.c      2018-10-28 14:22:29.387620432 +0100
***************
*** 5217,5223 ****
        char_u      *fname,
        buf_T       *buf,
        regmmatch_T *regmatch,
!       long        tomatch,
        int         duplicate_name,
        int         flags)
  {
--- 5217,5223 ----
        char_u      *fname,
        buf_T       *buf,
        regmmatch_T *regmatch,
!       long        *tomatch,
        int         duplicate_name,
        int         flags)
  {
***************
*** 5225,5231 ****
      long      lnum;
      colnr_T   col;
  
!     for (lnum = 1; lnum <= buf->b_ml.ml_line_count && tomatch > 0; ++lnum)
      {
        col = 0;
        while (vim_regexec_multi(regmatch, curwin, buf, lnum,
--- 5225,5231 ----
      long      lnum;
      colnr_T   col;
  
!     for (lnum = 1; lnum <= buf->b_ml.ml_line_count && *tomatch > 0; ++lnum)
      {
        col = 0;
        while (vim_regexec_multi(regmatch, curwin, buf, lnum,
***************
*** 5255,5261 ****
                break;
            }
            found_match = TRUE;
!           if (--tomatch == 0)
                break;
            if ((flags & VGR_GLOBAL) == 0
                    || regmatch->endpos[0].lnum > 0)
--- 5255,5261 ----
                break;
            }
            found_match = TRUE;
!           if (--*tomatch == 0)
                break;
            if ((flags & VGR_GLOBAL) == 0
                    || regmatch->endpos[0].lnum > 0)
***************
*** 5464,5470 ****
            // Try for a match in all lines of the buffer.
            // For ":1vimgrep" look for first match only.
            found_match = vgr_match_buflines(qi, fname, buf, &regmatch,
!                   tomatch, duplicate_name, flags);
  
            if (using_dummy)
            {
--- 5464,5470 ----
            // Try for a match in all lines of the buffer.
            // For ":1vimgrep" look for first match only.
            found_match = vgr_match_buflines(qi, fname, buf, &regmatch,
!                   &tomatch, duplicate_name, flags);
  
            if (using_dummy)
            {
*** ../vim-8.1.0498/src/testdir/test_quickfix.vim       2018-10-21 
18:47:39.622613657 +0200
--- src/testdir/test_quickfix.vim       2018-10-28 14:20:59.812305616 +0100
***************
*** 2364,2369 ****
--- 2364,2384 ----
    call XvimgrepTests('l')
  endfunc
  
+ " Test for incsearch highlighting of the :vimgrep pattern
+ " This test used to cause "E315: ml_get: invalid lnum" errors.
+ func Test_vimgrep_incsearch()
+   enew
+   set incsearch
+   call test_override("char_avail", 1)
+ 
+   call feedkeys(":2vimgrep assert test_quickfix.vim test_cdo.vim\<CR>", "ntx")
+   let l = getqflist()
+   call assert_equal(2, len(l))
+ 
+   call test_override("ALL", 0)
+   set noincsearch
+ endfunc
+ 
  func XfreeTests(cchar)
    call s:setup_commands(a:cchar)
  
*** ../vim-8.1.0498/src/version.c       2018-10-27 14:27:17.539786667 +0200
--- src/version.c       2018-10-28 14:22:20.871685414 +0100
***************
*** 794,795 ****
--- 794,797 ----
  {   /* Add new patch number below this line */
+ /**/
+     499,
  /**/

-- 
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       He was not afraid to die, Oh Brave Sir Robin,
       He was not at all afraid to be killed in nasty ways
       Brave, brave, brave, brave Sir Robin.
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

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