Patch 8.1.1123
Problem:    No way to avoid filtering for autocomplete function, causing
            flickering of the popup menu.
Solution:   Add the "equal" field to complete items. (closes #3887)
Files:      runtime/doc/insert.txt, src/insexpand.c,
            src/testdir/test_popup.vim


*** ../vim-8.1.1122/runtime/doc/insert.txt      2019-03-29 12:19:34.949348952 
+0100
--- runtime/doc/insert.txt      2019-04-06 13:28:26.273579773 +0200
***************
*** 1104,1109 ****
--- 1105,1113 ----
        icase           when non-zero case is to be ignored when comparing
                        items to be equal; when omitted zero is used, thus
                        items that only differ in case are added
+       equal           when non-zero, always treat this item to be equal when
+                       comparing. Which means, "equal=1" disables filtering
+                       of this item.
        dup             when non-zero this match will be added even when an
                        item with the same word is already present.
        empty           when non-zero this match will be added even when it is
***************
*** 1111,1120 ****
        user_data       custom data which is associated with the item and
                        available in |v:completed_item|
  
! All of these except "icase", "dup" and "empty" must be a string.  If an item
! does not meet these requirements then an error message is given and further
! items in the list are not used.  You can mix string and Dictionary items in
! the returned list.
  
  The "menu" item is used in the popup menu and may be truncated, thus it should
  be relatively short.  The "info" item can be longer, it will  be displayed in
--- 1115,1124 ----
        user_data       custom data which is associated with the item and
                        available in |v:completed_item|
  
! All of these except "icase", "equal", "dup" and "empty" must be a string.  If
! an item does not meet these requirements then an error message is given and
! further items in the list are not used.  You can mix string and Dictionary
! items in the returned list.
  
  The "menu" item is used in the popup menu and may be truncated, thus it should
  be relatively short.  The "info" item can be longer, it will  be displayed in
*** ../vim-8.1.1122/src/insexpand.c     2019-03-30 18:46:57.344077426 +0100
--- src/insexpand.c     2019-04-06 13:37:17.079078108 +0200
***************
*** 101,116 ****
  {
      compl_T   *cp_next;
      compl_T   *cp_prev;
!     char_u    *cp_str;        /* matched text */
!     char      cp_icase;       /* TRUE or FALSE: ignore case */
!     char_u    *(cp_text[CPT_COUNT]);  /* text for the menu */
!     char_u    *cp_fname;      /* file containing the match, allocated when
!                                * cp_flags has FREE_FNAME */
!     int               cp_flags;       /* ORIGINAL_TEXT, CONT_S_IPOS or 
FREE_FNAME */
!     int               cp_number;      /* sequence number */
  };
  
! # define ORIGINAL_TEXT        (1)   /* the original text when the expansion 
begun */
  # define FREE_FNAME   (2)
  
  static char e_hitend[] = N_("Hit end of paragraph");
--- 101,118 ----
  {
      compl_T   *cp_next;
      compl_T   *cp_prev;
!     char_u    *cp_str;        // matched text
!     char      cp_icase;       // TRUE or FALSE: ignore case
!     char      cp_equal;       // TRUE or FALSE: ins_compl_equal always ok
!     char_u    *(cp_text[CPT_COUNT]);  // text for the menu
!     char_u    *cp_fname;      // file containing the match, allocated when
!                               // cp_flags has FREE_FNAME
!     int               cp_flags;       // ORIGINAL_TEXT, CONT_S_IPOS or 
FREE_FNAME
!     int               cp_number;      // sequence number
  };
  
! // flags for ins_compl_add()
! # define ORIGINAL_TEXT        (1)   // the original text when the expansion 
begun
  # define FREE_FNAME   (2)
  
  static char e_hitend[] = N_("Hit end of paragraph");
***************
*** 183,189 ****
  static int      compl_opt_refresh_always = FALSE;
  static int      compl_opt_suppress_empty = FALSE;
  
! static int ins_compl_add(char_u *str, int len, int icase, char_u *fname, 
char_u **cptext, int cdir, int flags, int adup);
  static void ins_compl_longest_match(compl_T *match);
  static void ins_compl_del_pum(void);
  static void ins_compl_files(int count, char_u **files, int thesaurus, int 
flags, regmatch_T *regmatch, char_u *buf, int *dir);
--- 185,191 ----
  static int      compl_opt_refresh_always = FALSE;
  static int      compl_opt_suppress_empty = FALSE;
  
! static int ins_compl_add(char_u *str, int len, int icase, char_u *fname, 
char_u **cptext, int cdir, int flags, int adup, int equal);
  static void ins_compl_longest_match(compl_T *match);
  static void ins_compl_del_pum(void);
  static void ins_compl_files(int count, char_u **files, int thesaurus, int 
flags, regmatch_T *regmatch, char_u *buf, int *dir);
***************
*** 413,425 ****
   */
      int
  ins_compl_add_infercase(
!     char_u    *str,
      int               len,
      int               icase,
      char_u    *fname,
      int               dir,
      int               flags)
  {
      char_u    *p;
      int               i, c;
      int               actual_len;             // Take multi-byte characters
--- 415,428 ----
   */
      int
  ins_compl_add_infercase(
!     char_u    *str_arg,
      int               len,
      int               icase,
      char_u    *fname,
      int               dir,
      int               flags)
  {
+     char_u    *str = str_arg;
      char_u    *p;
      int               i, c;
      int               actual_len;             // Take multi-byte characters
***************
*** 550,559 ****
            vim_free(wca);
        }
  
!       return ins_compl_add(IObuff, len, icase, fname, NULL, dir,
!                                                               flags, FALSE);
      }
!     return ins_compl_add(str, len, icase, fname, NULL, dir, flags, FALSE);
  }
  
  /*
--- 553,563 ----
            vim_free(wca);
        }
  
!       str = IObuff;
      }
! 
!     return ins_compl_add(str, len, icase, fname, NULL, dir,
!                                                         flags, FALSE, FALSE);
  }
  
  /*
***************
*** 571,577 ****
      char_u    **cptext,   // extra text for popup menu or NULL
      int               cdir,
      int               flags,
!     int               adup)       // accept duplicate match
  {
      compl_T   *match;
      int               dir = (cdir == 0 ? compl_direction : cdir);
--- 575,582 ----
      char_u    **cptext,   // extra text for popup menu or NULL
      int               cdir,
      int               flags,
!     int               adup,       // accept duplicate match
!     int               equal)      // match is always accepted by 
ins_compl_equal
  {
      compl_T   *match;
      int               dir = (cdir == 0 ? compl_direction : cdir);
***************
*** 613,618 ****
--- 618,624 ----
        return FAIL;
      }
      match->cp_icase = icase;
+     match->cp_equal = equal;
  
      // match-fname is:
      // - compl_curr_match->cp_fname if it is a string equal to fname.
***************
*** 676,681 ****
--- 682,689 ----
      static int
  ins_compl_equal(compl_T *match, char_u *str, int len)
  {
+     if (match->cp_equal)
+       return TRUE;
      if (match->cp_icase)
        return STRNICMP(match->cp_str, str, (size_t)len) == 0;
      return STRNCMP(match->cp_str, str, (size_t)len) == 0;
***************
*** 776,782 ****
  
      for (i = 0; i < num_matches && add_r != FAIL; i++)
        if ((add_r = ins_compl_add(matches[i], -1, icase,
!                                           NULL, NULL, dir, 0, FALSE)) == OK)
            // if dir was BACKWARD then honor it just once
            dir = FORWARD;
      FreeWild(num_matches, matches);
--- 784,790 ----
  
      for (i = 0; i < num_matches && add_r != FAIL; i++)
        if ((add_r = ins_compl_add(matches[i], -1, icase,
!                                     NULL, NULL, dir, 0, FALSE, FALSE)) == OK)
            // if dir was BACKWARD then honor it just once
            dir = FORWARD;
      FreeWild(num_matches, matches);
***************
*** 868,874 ****
      // compl_pattern doesn't need to be set
      compl_orig_text = vim_strnsave(ml_get_curline() + compl_col, 
compl_length);
      if (compl_orig_text == NULL || ins_compl_add(compl_orig_text,
!                       -1, p_ic, NULL, NULL, 0, ORIGINAL_TEXT, FALSE) != OK)
        return;
  
      ctrl_x_mode = CTRL_X_EVAL;
--- 876,882 ----
      // compl_pattern doesn't need to be set
      compl_orig_text = vim_strnsave(ml_get_curline() + compl_col, 
compl_length);
      if (compl_orig_text == NULL || ins_compl_add(compl_orig_text,
!                  -1, p_ic, NULL, NULL, 0, ORIGINAL_TEXT, FALSE, FALSE) != OK)
        return;
  
      ctrl_x_mode = CTRL_X_EVAL;
***************
*** 2365,2370 ****
--- 2373,2379 ----
      int               icase = FALSE;
      int               adup = FALSE;
      int               aempty = FALSE;
+     int               aequal = FALSE;
      char_u    *(cptext[CPT_COUNT]);
  
      if (tv->v_type == VAR_DICT && tv->vval.v_dict != NULL)
***************
*** 2386,2391 ****
--- 2395,2402 ----
            adup = dict_get_number(tv->vval.v_dict, (char_u *)"dup");
        if (dict_get_string(tv->vval.v_dict, (char_u *)"empty", FALSE) != NULL)
            aempty = dict_get_number(tv->vval.v_dict, (char_u *)"empty");
+       if (dict_get_string(tv->vval.v_dict, (char_u *)"equal", FALSE) != NULL)
+           aequal = dict_get_number(tv->vval.v_dict, (char_u *)"equal");
      }
      else
      {
***************
*** 2394,2400 ****
      }
      if (word == NULL || (!aempty && *word == NUL))
        return FAIL;
!     return ins_compl_add(word, -1, icase, NULL, cptext, dir, 0, adup);
  }
  #endif
  
--- 2405,2411 ----
      }
      if (word == NULL || (!aempty && *word == NUL))
        return FAIL;
!     return ins_compl_add(word, -1, icase, NULL, cptext, dir, 0, adup, aequal);
  }
  #endif
  
***************
*** 3694,3700 ****
        vim_free(compl_orig_text);
        compl_orig_text = vim_strnsave(line + compl_col, compl_length);
        if (compl_orig_text == NULL || ins_compl_add(compl_orig_text,
!                       -1, p_ic, NULL, NULL, 0, ORIGINAL_TEXT, FALSE) != OK)
        {
            VIM_CLEAR(compl_pattern);
            VIM_CLEAR(compl_orig_text);
--- 3705,3711 ----
        vim_free(compl_orig_text);
        compl_orig_text = vim_strnsave(line + compl_col, compl_length);
        if (compl_orig_text == NULL || ins_compl_add(compl_orig_text,
!                  -1, p_ic, NULL, NULL, 0, ORIGINAL_TEXT, FALSE, FALSE) != OK)
        {
            VIM_CLEAR(compl_pattern);
            VIM_CLEAR(compl_orig_text);
*** ../vim-8.1.1122/src/testdir/test_popup.vim  2019-03-29 12:19:34.953348924 
+0100
--- src/testdir/test_popup.vim  2019-04-06 13:34:17.403736197 +0200
***************
*** 276,281 ****
--- 276,313 ----
    iunmap <F5>
  endfunc
  
+ func Test_complete_no_filter()
+   func! s:complTest1() abort
+     call complete(1, [{'word': 'foobar'}])
+     return ''
+   endfunc
+   func! s:complTest2() abort
+     call complete(1, [{'word': 'foobar', 'equal': 1}])
+     return ''
+   endfunc
+ 
+   let completeopt = &completeopt
+ 
+   " without equal=1
+   new
+   set completeopt=menuone,noinsert,menu
+   inoremap <F5>  <C-R>=s:complTest1()<CR>
+   call feedkeys("i\<F5>z\<CR>\<CR>\<ESC>.", 'tx')
+   call assert_equal('z', getline(1))
+   bwipe!
+ 
+   " with equal=1
+   new
+   set completeopt=menuone,noinsert,menu
+   inoremap <F5>  <C-R>=s:complTest2()<CR>
+   call feedkeys("i\<F5>z\<CR>\<CR>\<ESC>.", 'tx')
+   call assert_equal('foobar', getline(1))
+   bwipe!
+ 
+   let &completeopt = completeopt
+   iunmap <F5>
+ endfunc
+ 
  func Test_compl_vim_cmds_after_register_expr()
    func! s:test_func()
      return 'autocmd '
*** ../vim-8.1.1122/src/version.c       2019-04-06 13:18:06.737335067 +0200
--- src/version.c       2019-04-06 13:27:34.729885207 +0200
***************
*** 773,774 ****
--- 773,776 ----
  {   /* Add new patch number below this line */
+ /**/
+     1123,
  /**/

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