Patch 8.1.0629
Problem:    "gn" selects the wrong text with a multi-line match.
Solution:   Get the end position from searchit() directly. (closes #3695)
Files:      src/testdir/test_gn.vim, src/search.c, src/proto/search.pro,
            src/edit.c, src/evalfunc.c, src/ex_docmd.c, ex_getln.c,
            src/normal.c


*** ../vim-8.1.0628/src/testdir/test_gn.vim     2018-05-22 17:50:38.683980716 
+0200
--- src/testdir/test_gn.vim     2018-12-22 20:09:51.629267209 +0100
***************
*** 131,134 ****
--- 131,153 ----
    set wrapscan&vim
  endfu
  
+ func Test_gn_multi_line()
+   new
+   call setline(1, [
+         \ 'func Tm1()',
+         \ ' echo "one"',
+         \ 'endfunc',
+         \ 'func Tm2()',
+         \ ' echo "two"',
+         \ 'endfunc',
+         \ 'func Tm3()',
+         \ ' echo "three"',
+         \ 'endfunc',
+         \])
+   /\v^func Tm\d\(\)\n.*\zs".*"\ze$
+   normal jgnrx
+   call assert_equal(' echo xxxxx', getline(5))
+   bwipe!
+ endfunc
+ 
  " vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.1.0628/src/search.c        2018-12-01 21:08:18.019648483 +0100
--- src/search.c        2018-12-23 19:08:55.834869939 +0100
***************
*** 610,617 ****
  
  /*
   * Lowest level search function.
!  * Search for 'count'th occurrence of pattern 'pat' in direction 'dir'.
!  * Start at position 'pos' and return the found position in 'pos'.
   *
   * if (options & SEARCH_MSG) == 0 don't give any messages
   * if (options & SEARCH_MSG) == SEARCH_NFMSG don't give 'notfound' messages
--- 610,617 ----
  
  /*
   * Lowest level search function.
!  * Search for 'count'th occurrence of pattern "pat" in direction "dir".
!  * Start at position "pos" and return the found position in "pos".
   *
   * if (options & SEARCH_MSG) == 0 don't give any messages
   * if (options & SEARCH_MSG) == SEARCH_NFMSG don't give 'notfound' messages
***************
*** 634,639 ****
--- 634,640 ----
                                   buffer without a window! */
      buf_T     *buf,
      pos_T     *pos,
+     pos_T     *end_pos,       // set to end of the match, unless NULL
      int               dir,
      char_u    *pat,
      long      count,
***************
*** 1035,1048 ****
--- 1036,1061 ----
                            }
  #endif
                        }
+                       if (end_pos != NULL)
+                       {
+                           end_pos->lnum = lnum + matchpos.lnum;
+                           end_pos->col = matchpos.col;
+                       }
                    }
                    else
                    {
                        pos->lnum = lnum + matchpos.lnum;
                        pos->col = matchpos.col;
+                       if (end_pos != NULL)
+                       {
+                           end_pos->lnum = lnum + endpos.lnum;
+                           end_pos->col = endpos.col;
+                       }
                    }
  #ifdef FEAT_VIRTUALEDIT
                    pos->coladd = 0;
+                   if (end_pos != NULL)
+                       end_pos->coladd = 0;
  #endif
                    found = 1;
                    first_match = FALSE;
***************
*** 1496,1502 ****
             lrFswap(searchstr,0);
  #endif
  
!       c = searchit(curwin, curbuf, &pos, dirc == '/' ? FORWARD : BACKWARD,
                searchstr, count, spats[0].off.end + (options &
                       (SEARCH_KEEP + SEARCH_PEEK + SEARCH_HIS
                        + SEARCH_MSG + SEARCH_START
--- 1509,1515 ----
             lrFswap(searchstr,0);
  #endif
  
!       c = searchit(curwin, curbuf, &pos, NULL, dirc == '/' ? FORWARD : 
BACKWARD,
                searchstr, count, spats[0].off.end + (options &
                       (SEARCH_KEEP + SEARCH_PEEK + SEARCH_HIS
                        + SEARCH_MSG + SEARCH_START
***************
*** 4665,4684 ****
      int
  current_search(
      long      count,
!     int               forward)        /* move forward or backwards */
  {
!     pos_T     start_pos;      /* position before the pattern */
!     pos_T     orig_pos;       /* position of the cursor at beginning */
!     pos_T     first_match;    /* position of first match */
!     pos_T     pos;            /* position after the pattern */
      int               i;
      int               dir;
!     int               result;         /* result of various function calls */
      char_u    old_p_ws = p_ws;
      int               flags = 0;
      pos_T     save_VIsual = VIsual;
      int               one_char;
-     int               direction = forward ? FORWARD : BACKWARD;
  
      /* wrapping should not occur */
      p_ws = FALSE;
--- 4678,4696 ----
      int
  current_search(
      long      count,
!     int               forward)        // TRUE for forward, FALSE for backward
  {
!     pos_T     start_pos;      // start position of the pattern match
!     pos_T     end_pos;        // end position of the pattern match
!     pos_T     orig_pos;       // position of the cursor at beginning
!     pos_T     pos;            // position after the pattern
      int               i;
      int               dir;
!     int               result;         // result of various function calls
      char_u    old_p_ws = p_ws;
      int               flags = 0;
      pos_T     save_VIsual = VIsual;
      int               one_char;
  
      /* wrapping should not occur */
      p_ws = FALSE;
***************
*** 4730,4737 ****
        flags = 0;
        if (!dir && !one_char)
            flags = SEARCH_END;
  
!       result = searchit(curwin, curbuf, &pos, (dir ? FORWARD : BACKWARD),
                spats[last_idx].pat, (long) (i ? count : 1),
                SEARCH_KEEP | flags, RE_SEARCH, 0, NULL, NULL);
  
--- 4742,4751 ----
        flags = 0;
        if (!dir && !one_char)
            flags = SEARCH_END;
+       end_pos = pos;
  
!       result = searchit(curwin, curbuf, &pos, &end_pos,
!               (dir ? FORWARD : BACKWARD),
                spats[last_idx].pat, (long) (i ? count : 1),
                SEARCH_KEEP | flags, RE_SEARCH, 0, NULL, NULL);
  
***************
*** 4739,4745 ****
         * beginning of the file (cursor might be on the search match)
         * except when Visual mode is active, so that extending the visual
         * selection works. */
!       if (!result && i) /* not found, abort */
        {
            curwin->w_cursor = orig_pos;
            if (VIsual_active)
--- 4753,4759 ----
         * beginning of the file (cursor might be on the search match)
         * except when Visual mode is active, so that extending the visual
         * selection works. */
!       if (i == 1 && !result) /* not found, abort */
        {
            curwin->w_cursor = orig_pos;
            if (VIsual_active)
***************
*** 4747,4753 ****
            p_ws = old_p_ws;
            return FAIL;
        }
!       else if (!i && !result)
        {
            if (forward)
            {
--- 4761,4767 ----
            p_ws = old_p_ws;
            return FAIL;
        }
!       else if (i == 0 && !result)
        {
            if (forward)
            {
***************
*** 4763,4810 ****
                                ml_get(curwin->w_buffer->b_ml.ml_line_count));
            }
        }
-       if (i == 0)
-           first_match = pos;
        p_ws = old_p_ws;
      }
  
      start_pos = pos;
-     flags = forward ? SEARCH_END : SEARCH_START;
- 
-     /* Check again from the current cursor position,
-      * since the next match might actually by only one char wide */
-     one_char = is_one_char(spats[last_idx].pat, FALSE, &pos, direction);
-     if (one_char < 0)
-       /* search failed, abort */
-       return FAIL;
- 
-     /* move to match, except for zero-width matches, in which case, we are
-      * already on the next match */
-     if (!one_char)
-     {
-       p_ws = FALSE;
-       for (i = 0; i < 2; i++)
-       {
-           result = searchit(curwin, curbuf, &pos, direction,
-                   spats[last_idx].pat, 0L, flags | SEARCH_KEEP, RE_SEARCH, 0,
-                                                                  NULL, NULL);
-           /* Search successfull, break out from the loop */
-           if (result)
-               break;
-           /* search failed, try again from the last search position match */
-           pos = first_match;
-       }
-     }
- 
      p_ws = old_p_ws;
-     /* not found */
-     if (!result)
-       return FAIL;
  
      if (!VIsual_active)
        VIsual = start_pos;
  
!     curwin->w_cursor = pos;
      VIsual_active = TRUE;
      VIsual_mode = 'v';
  
--- 4777,4795 ----
                                ml_get(curwin->w_buffer->b_ml.ml_line_count));
            }
        }
        p_ws = old_p_ws;
      }
  
      start_pos = pos;
      p_ws = old_p_ws;
  
      if (!VIsual_active)
        VIsual = start_pos;
  
!     // put cursor on last character of match
!     curwin->w_cursor = end_pos;
!     if (LT_POS(VIsual, end_pos))
!       dec_cursor();
      VIsual_active = TRUE;
      VIsual_mode = 'v';
  
***************
*** 4880,4886 ****
        flag = SEARCH_START;
      }
  
!     if (searchit(curwin, curbuf, &pos, direction, pattern, 1,
                         SEARCH_KEEP + flag, RE_SEARCH, 0, NULL, NULL) != FAIL)
      {
        /* Zero-width pattern should match somewhere, then we can check if
--- 4865,4871 ----
        flag = SEARCH_START;
      }
  
!     if (searchit(curwin, curbuf, &pos, NULL, direction, pattern, 1,
                         SEARCH_KEEP + flag, RE_SEARCH, 0, NULL, NULL) != FAIL)
      {
        /* Zero-width pattern should match somewhere, then we can check if
*** ../vim-8.1.0628/src/proto/search.pro        2018-05-17 13:52:50.000000000 
+0200
--- src/proto/search.pro        2018-12-22 19:28:05.421217008 +0100
***************
*** 22,28 ****
  void reset_search_dir(void);
  void set_last_search_pat(char_u *s, int idx, int magic, int setlast);
  void last_pat_prog(regmmatch_T *regmatch);
! int searchit(win_T *win, buf_T *buf, pos_T *pos, int dir, char_u *pat, long 
count, int options, int pat_use, linenr_T stop_lnum, proftime_T *tm, int 
*timed_out);
  void set_search_direction(int cdir);
  int do_search(oparg_T *oap, int dirc, char_u *pat, long count, int options, 
proftime_T *tm, int *timed_out);
  int search_for_exact_line(buf_T *buf, pos_T *pos, int dir, char_u *pat);
--- 22,28 ----
  void reset_search_dir(void);
  void set_last_search_pat(char_u *s, int idx, int magic, int setlast);
  void last_pat_prog(regmmatch_T *regmatch);
! int searchit(win_T *win, buf_T *buf, pos_T *pos, pos_T *end_pos, int dir, 
char_u *pat, long count, int options, int pat_use, linenr_T stop_lnum, 
proftime_T *tm, int *timed_out);
  void set_search_direction(int cdir);
  int do_search(oparg_T *oap, int dirc, char_u *pat, long count, int options, 
proftime_T *tm, int *timed_out);
  int search_for_exact_line(buf_T *buf, pos_T *pos, int dir, char_u *pat);
*** ../vim-8.1.0628/src/edit.c  2018-12-21 16:04:16.324437435 +0100
--- src/edit.c  2018-12-22 19:28:18.801116799 +0100
***************
*** 4653,4659 ****
                    found_new_match = search_for_exact_line(ins_buf, pos,
                                              compl_direction, compl_pattern);
                else
!                   found_new_match = searchit(NULL, ins_buf, pos,
                                                              compl_direction,
                                 compl_pattern, 1L, SEARCH_KEEP + SEARCH_NFMSG,
                                             RE_LAST, (linenr_T)0, NULL, NULL);
--- 4653,4659 ----
                    found_new_match = search_for_exact_line(ins_buf, pos,
                                              compl_direction, compl_pattern);
                else
!                   found_new_match = searchit(NULL, ins_buf, pos, NULL,
                                                              compl_direction,
                                 compl_pattern, 1L, SEARCH_KEEP + SEARCH_NFMSG,
                                             RE_LAST, (linenr_T)0, NULL, NULL);
*** ../vim-8.1.0628/src/evalfunc.c      2018-12-22 13:27:59.115503998 +0100
--- src/evalfunc.c      2018-12-22 19:29:14.056703170 +0100
***************
*** 10056,10062 ****
      }
  
      pos = save_cursor = curwin->w_cursor;
!     subpatnum = searchit(curwin, curbuf, &pos, dir, pat, 1L,
                           options, RE_SEARCH, (linenr_T)lnum_stop, &tm, NULL);
      if (subpatnum != FAIL)
      {
--- 10056,10062 ----
      }
  
      pos = save_cursor = curwin->w_cursor;
!     subpatnum = searchit(curwin, curbuf, &pos, NULL, dir, pat, 1L,
                           options, RE_SEARCH, (linenr_T)lnum_stop, &tm, NULL);
      if (subpatnum != FAIL)
      {
***************
*** 10414,10420 ****
      pat = pat3;
      for (;;)
      {
!       n = searchit(curwin, curbuf, &pos, dir, pat, 1L,
                                     options, RE_SEARCH, lnum_stop, &tm, NULL);
        if (n == FAIL || (firstpos.lnum != 0 && EQUAL_POS(pos, firstpos)))
            /* didn't find it or found the first match again: FAIL */
--- 10414,10420 ----
      pat = pat3;
      for (;;)
      {
!       n = searchit(curwin, curbuf, &pos, NULL, dir, pat, 1L,
                                     options, RE_SEARCH, lnum_stop, &tm, NULL);
        if (n == FAIL || (firstpos.lnum != 0 && EQUAL_POS(pos, firstpos)))
            /* didn't find it or found the first match again: FAIL */
*** ../vim-8.1.0628/src/ex_docmd.c      2018-12-22 17:07:45.771347741 +0100
--- src/ex_docmd.c      2018-12-22 19:29:20.004658681 +0100
***************
*** 4669,4675 ****
  #ifdef FEAT_VIRTUALEDIT
                    pos.coladd = 0;
  #endif
!                   if (searchit(curwin, curbuf, &pos,
                                *cmd == '?' ? BACKWARD : FORWARD,
                                (char_u *)"", 1L, SEARCH_MSG,
                                        i, (linenr_T)0, NULL, NULL) != FAIL)
--- 4669,4675 ----
  #ifdef FEAT_VIRTUALEDIT
                    pos.coladd = 0;
  #endif
!                   if (searchit(curwin, curbuf, &pos, NULL,
                                *cmd == '?' ? BACKWARD : FORWARD,
                                (char_u *)"", 1L, SEARCH_MSG,
                                        i, (linenr_T)0, NULL, NULL) != FAIL)
*** ../vim-8.1.0628/src/ex_getln.c      2018-12-13 22:17:52.877941474 +0100
--- src/ex_getln.c      2018-12-22 19:29:46.224462639 +0100
***************
*** 675,681 ****
      ++emsg_off;
      save = pat[patlen];
      pat[patlen] = NUL;
!     i = searchit(curwin, curbuf, &t,
                 c == Ctrl_G ? FORWARD : BACKWARD,
                 pat, count, search_flags,
                 RE_SEARCH, 0, NULL, NULL);
--- 675,681 ----
      ++emsg_off;
      save = pat[patlen];
      pat[patlen] = NUL;
!     i = searchit(curwin, curbuf, &t, NULL,
                 c == Ctrl_G ? FORWARD : BACKWARD,
                 pat, count, search_flags,
                 RE_SEARCH, 0, NULL, NULL);
*** ../vim-8.1.0628/src/normal.c        2018-11-22 03:07:30.944596219 +0100
--- src/normal.c        2018-12-22 19:30:21.432199427 +0100
***************
*** 4338,4344 ****
      for (;;)
      {
        valid = FALSE;
!       t = searchit(curwin, curbuf, &curwin->w_cursor, FORWARD,
                       pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL, NULL);
        if (curwin->w_cursor.lnum >= old_pos.lnum)
            t = FAIL;   /* match after start is failure too */
--- 4338,4344 ----
      for (;;)
      {
        valid = FALSE;
!       t = searchit(curwin, curbuf, &curwin->w_cursor, NULL, FORWARD,
                       pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL, NULL);
        if (curwin->w_cursor.lnum >= old_pos.lnum)
            t = FAIL;   /* match after start is failure too */
*** ../vim-8.1.0628/src/version.c       2018-12-23 13:36:36.671194499 +0100
--- src/version.c       2018-12-23 19:06:08.800075128 +0100
***************
*** 801,802 ****
--- 801,804 ----
  {   /* Add new patch number below this line */
+ /**/
+     629,
  /**/

-- 
A fine is a tax for doing wrong.  A tax is a fine for doing well.

 /// Bram Moolenaar -- [email protected] -- 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    ///

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