vim-patch:9.1.1284: not possible to configure pum truncation char

Problem:  not possible to configure the completion menu truncation
          character
Solution: add the "trunc" suboption to the 'fillchars' setting to
          configure the truncation indicator (glepnir).

closes: vim/vim#17006

b87620466c

Co-authored-by: glepnir <glephunter@gmail.com>

runtime/doc/options.txt

@@ -2615,8 +2615,8 @@ A jump table for the options with a short description can be found at |Q_op|.
 						*'fillchars'* *'fcs'*
 'fillchars' 'fcs'	string	(default "")
 			global or local to window |global-local|
-	Characters to fill the statuslines, vertical separators and special
+	Characters to fill the statuslines, vertical separators, special
-	lines in the window.
+	lines in the window and truncated text in the |ins-completion-menu|.
 	It is a comma-separated list of items.  Each item has a name, a colon
 	and the value of that item: |E1511|
 
@@ -2640,6 +2640,8 @@ A jump table for the options with a short description can be found at |Q_op|.
 	  msgsep	' '		message separator 'display'
 	  eob		'~'		empty lines at the end of a buffer
 	  lastline	'@'		'display' contains lastline/truncate
+	  trunc		'>'		truncated text in the
+					|ins-completion-menu|.
 
 	Any one that is omitted will fall back to the default.
 
@@ -2671,9 +2673,14 @@ A jump table for the options with a short description can be found at |Q_op|.
 	  vertright	WinSeparator		|hl-WinSeparator|
 	  verthoriz	WinSeparator		|hl-WinSeparator|
 	  fold		Folded			|hl-Folded|
+	  foldopen	FoldColumn		|hl-FoldColumn|
+	  foldclose	FoldColumn		|hl-FoldColumn|
+	  foldsep	FoldColumn		|hl-FoldColumn|
 	  diff		DiffDelete		|hl-DiffDelete|
 	  eob		EndOfBuffer		|hl-EndOfBuffer|
 	  lastline	NonText			|hl-NonText|
+	  trunc		one of the many Popup menu highlighting groups like
+			|hl-PmenuSel|
 
 					*'findfunc'* *'ffu'* *E1514*
 'findfunc' 'ffu'	string	(default "")
@@ -4656,8 +4663,10 @@ A jump table for the options with a short description can be found at |Q_op|.
 			global
 	Maximum width for the popup menu (|ins-completion-menu|).  When zero,
 	there is no maximum width limit, otherwise the popup menu will never be
-	wider than this value.  Truncated text will be indicated by "..." at the
+	wider than this value.  Truncated text will be indicated by "trunc"
-	end.  Takes precedence over 'pumwidth'.
+	value of 'fillchars' option.
+
+	This option takes precedence over 'pumwidth'.
 
 						*'pumwidth'* *'pw'*
 'pumwidth' 'pw'		number	(default 15)

runtime/lua/vim/_meta/options.lua

@@ -2307,8 +2307,8 @@ vim.o.ft = vim.o.filetype
 vim.bo.filetype = vim.o.filetype
 vim.bo.ft = vim.bo.filetype
 
---- Characters to fill the statuslines, vertical separators and special
+--- Characters to fill the statuslines, vertical separators, special
---- lines in the window.
+--- lines in the window and truncated text in the `ins-completion-menu`.
 --- It is a comma-separated list of items.  Each item has a name, a colon
 --- and the value of that item: `E1511`
 ---
@@ -2332,6 +2332,8 @@ vim.bo.ft = vim.bo.filetype
 ---   msgsep	' '		message separator 'display'
 ---   eob		'~'		empty lines at the end of a buffer
 ---   lastline	'@'		'display' contains lastline/truncate
+---   trunc		'>'		truncated text in the
+--- 				`ins-completion-menu`.
 ---
 --- Any one that is omitted will fall back to the default.
 ---
@@ -2366,9 +2368,14 @@ vim.bo.ft = vim.bo.filetype
 ---   vertright	WinSeparator		`hl-WinSeparator`
 ---   verthoriz	WinSeparator		`hl-WinSeparator`
 ---   fold		Folded			`hl-Folded`
+---   foldopen	FoldColumn		`hl-FoldColumn`
+---   foldclose	FoldColumn		`hl-FoldColumn`
+---   foldsep	FoldColumn		`hl-FoldColumn`
 ---   diff		DiffDelete		`hl-DiffDelete`
 ---   eob		EndOfBuffer		`hl-EndOfBuffer`
 ---   lastline	NonText			`hl-NonText`
+---   trunc		one of the many Popup menu highlighting groups like
+--- 		`hl-PmenuSel`
 ---
 --- @type string
 vim.o.fillchars = ""
@@ -4838,8 +4845,10 @@ vim.go.ph = vim.go.pumheight
 
 --- Maximum width for the popup menu (`ins-completion-menu`).  When zero,
 --- there is no maximum width limit, otherwise the popup menu will never be
---- wider than this value.  Truncated text will be indicated by "..." at the
+--- wider than this value.  Truncated text will be indicated by "trunc"
---- end.  Takes precedence over 'pumwidth'.
+--- value of 'fillchars' option.
+---
+--- This option takes precedence over 'pumwidth'.
 ---
 --- @type integer
 vim.o.pummaxwidth = 0

runtime/optwin.vim

@@ -1,7 +1,7 @@
 " These commands create the option window.
 "
 " Maintainer:	The Vim Project <https://github.com/vim/vim>
-" Last Change:	2025 Apr 06
+" Last Change:	2025 Apr 07
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " If there already is an option window, jump to that one.
@@ -333,7 +333,7 @@ call <SID>AddOption("sidescrolloff", gettext("minimal number of columns to keep
 call append("$", " \tset siso=" . &siso)
 call <SID>AddOption("display", gettext("include \"lastline\" to show the last line even if it doesn't fit\ninclude \"uhex\" to show unprintable characters as a hex number"))
 call <SID>OptionG("dy", &dy)
-call <SID>AddOption("fillchars", gettext("characters to use for the status line, folds and filler lines"))
+call <SID>AddOption("fillchars", gettext("characters to use for the status line, folds, diffs, buffer text, filler lines and truncation in the completion menu"))
 call <SID>OptionG("fcs", &fcs)
 call <SID>AddOption("cmdheight", gettext("number of lines used for the command-line"))
 call append("$", " \tset ch=" . &ch)

src/nvim/buffer_defs.h

@@ -1056,6 +1056,7 @@ typedef struct {
   schar_T msgsep;
   schar_T eob;
   schar_T lastline;
+  schar_T trunc;
 } fcs_chars_T;
 
 /// Structure which contains all information that belongs to a window.

src/nvim/options.lua

@@ -3035,8 +3035,8 @@ local options = {
       defaults = '',
       deny_duplicates = true,
       desc = [=[
-        Characters to fill the statuslines, vertical separators and special
+        Characters to fill the statuslines, vertical separators, special
-        lines in the window.
+        lines in the window and truncated text in the |ins-completion-menu|.
         It is a comma-separated list of items.  Each item has a name, a colon
         and the value of that item: |E1511|
 
@@ -3060,6 +3060,8 @@ local options = {
           msgsep	' '		message separator 'display'
           eob		'~'		empty lines at the end of a buffer
           lastline	'@'		'display' contains lastline/truncate
+          trunc		'>'		truncated text in the
+        				|ins-completion-menu|.
 
         Any one that is omitted will fall back to the default.
 
@@ -3091,9 +3093,14 @@ local options = {
           vertright	WinSeparator		|hl-WinSeparator|
           verthoriz	WinSeparator		|hl-WinSeparator|
           fold		Folded			|hl-Folded|
+          foldopen	FoldColumn		|hl-FoldColumn|
+          foldclose	FoldColumn		|hl-FoldColumn|
+          foldsep	FoldColumn		|hl-FoldColumn|
           diff		DiffDelete		|hl-DiffDelete|
           eob		EndOfBuffer		|hl-EndOfBuffer|
           lastline	NonText			|hl-NonText|
+          trunc		one of the many Popup menu highlighting groups like
+        		|hl-PmenuSel|
       ]=],
       expand_cb = 'expand_set_chars_option',
       full_name = 'fillchars',
@@ -6477,8 +6484,10 @@ local options = {
       desc = [=[
         Maximum width for the popup menu (|ins-completion-menu|).  When zero,
         there is no maximum width limit, otherwise the popup menu will never be
-        wider than this value.  Truncated text will be indicated by "..." at the
+        wider than this value.  Truncated text will be indicated by "trunc"
-        end.  Takes precedence over 'pumwidth'.
+        value of 'fillchars' option.
+
+        This option takes precedence over 'pumwidth'.
       ]=],
       full_name = 'pummaxwidth',
       scope = { 'global' },

src/nvim/optionstr.c

@@ -2132,6 +2132,7 @@ static const struct chars_tab fcs_tab[] = {
   CHARSTAB_ENTRY(&fcs_chars.msgsep,     "msgsep",    " ", NULL),
   CHARSTAB_ENTRY(&fcs_chars.eob,        "eob",       "~", NULL),
   CHARSTAB_ENTRY(&fcs_chars.lastline,   "lastline",  "@", NULL),
+  CHARSTAB_ENTRY(&fcs_chars.trunc,      "trunc",     ">", NULL),
 };
 
 static lcs_chars_T lcs_chars;
@@ -2237,6 +2238,7 @@ const char *set_chars_option(win_T *wp, const char *value, CharsOption what, boo
         }
 
         const char *s = p + tab[i].name.size + 1;
+
         if (what == kListchars && strcmp(tab[i].name.data, "multispace") == 0) {
           if (round == 0) {
             // Get length of lcs-multispace string in the first round
@@ -2257,7 +2259,6 @@ const char *set_chars_option(win_T *wp, const char *value, CharsOption what, boo
                                      e_wrong_number_of_characters_for_field_str,
                                      tab[i].name.data);
             }
-            p = s;
           } else {
             int multispace_pos = 0;
             while (*s != NUL && *s != ',') {
@@ -2266,14 +2267,14 @@ const char *set_chars_option(win_T *wp, const char *value, CharsOption what, boo
                 lcs_chars.multispace[multispace_pos++] = c1;
               }
             }
-            p = s;
           }
+          p = s;
           break;
         }
 
         if (what == kListchars && strcmp(tab[i].name.data, "leadmultispace") == 0) {
           if (round == 0) {
-            // get length of lcs-leadmultispace string in first round
+            // Get length of lcs-leadmultispace string in first round
             last_lmultispace = p;
             lead_multispace_len = 0;
             while (*s != NUL && *s != ',') {
@@ -2291,7 +2292,6 @@ const char *set_chars_option(win_T *wp, const char *value, CharsOption what, boo
                                      e_wrong_number_of_characters_for_field_str,
                                      tab[i].name.data);
             }
-            p = s;
           } else {
             int multispace_pos = 0;
             while (*s != NUL && *s != ',') {
@@ -2300,8 +2300,8 @@ const char *set_chars_option(win_T *wp, const char *value, CharsOption what, boo
                 lcs_chars.leadmultispace[multispace_pos++] = c1;
               }
             }
-            p = s;
           }
+          p = s;
           break;
         }
 

src/nvim/popupmenu.c

@@ -577,6 +577,7 @@ void pum_redraw(void)
   int thumb_pos = 0;
   int thumb_height = 1;
   int n;
+  schar_T fcs_trunc = curwin->w_p_fcs_chars.trunc;
 
   //                         "word"   "kind"   "extra text"
   const hlf_T hlfsNorm[3] = { HLF_PNI, HLF_PNK, HLF_PNX };
@@ -644,8 +645,6 @@ void pum_redraw(void)
     thumb_pos = (pum_first * (pum_height - thumb_height) + scroll_range / 2) / scroll_range;
   }
 
-  const int ellipsis_width = 3;
-
   for (int i = 0; i < pum_height; i++) {
     int idx = i + pum_first;
     const hlf_T *const hlfs = (idx == pum_selected) ? hlfsSel : hlfsNorm;
@@ -668,7 +667,7 @@ void pum_redraw(void)
     // Do this 3 times and order from p_cia
     int grid_col = col_off;
     int totwidth = 0;
-    bool need_ellipsis = false;
+    bool need_fcs_trunc = false;
     int order[3];
     int items_width_array[3] = { pum_base_width, pum_kind_width, pum_extra_width };
     pum_align_order(order);
@@ -721,9 +720,8 @@ void pum_redraw(void)
             char *rt = reverse_text(st);
             char *rt_start = rt;
             int cells = (int)mb_string2cells(rt);
-            if (p_pmw > ellipsis_width && pum_width == p_pmw
+            if (pum_width == p_pmw && totwidth + 1 + cells >= pum_width) {
-                && grid_col - cells < col_off - pum_width) {
+              need_fcs_trunc = true;
-              need_ellipsis = true;
             }
 
             if (grid_col - cells < col_off - pum_width) {
@@ -751,9 +749,8 @@ void pum_redraw(void)
             grid_col -= width;
           } else {
             int cells = (int)mb_string2cells(st);
-            if (p_pmw > ellipsis_width && pum_width == p_pmw
+            if (pum_width == p_pmw && totwidth + 1 + cells >= pum_width) {
-                && grid_col + cells > col_off + pum_width) {
+              need_fcs_trunc = true;
-              need_ellipsis = true;
             }
 
             if (attrs == NULL) {
@@ -820,21 +817,21 @@ void pum_redraw(void)
     if (pum_rl) {
       const int lcol = col_off - pum_width + 1;
       grid_line_fill(lcol, grid_col + 1, schar_from_ascii(' '), orig_attr);
-      if (need_ellipsis) {
+      if (need_fcs_trunc) {
-        bool over_wide = pum_width > ellipsis_width && linebuf_char[lcol + ellipsis_width] == NUL;
+        linebuf_char[lcol] = fcs_trunc != NUL && fcs_trunc != schar_from_ascii('>')
-        grid_line_fill(lcol, lcol + ellipsis_width, schar_from_ascii('.'), orig_attr);
+                             ? fcs_trunc : schar_from_ascii('<');
-        if (over_wide) {
+        if (pum_width > 1 && linebuf_char[lcol + 1] == NUL) {
-          grid_line_put_schar(lcol + ellipsis_width, schar_from_ascii(' '), orig_attr);
+          linebuf_char[lcol + 1] = schar_from_ascii(' ');
         }
       }
     } else {
       const int rcol = col_off + pum_width;
       grid_line_fill(grid_col, rcol, schar_from_ascii(' '), orig_attr);
-      if (need_ellipsis) {
+      if (need_fcs_trunc) {
-        if (pum_width > ellipsis_width && linebuf_char[rcol - ellipsis_width] == NUL) {
+        if (pum_width > 1 && linebuf_char[rcol - 1] == NUL) {
-          grid_line_put_schar(rcol - ellipsis_width - 1, schar_from_ascii(' '), orig_attr);
+          linebuf_char[rcol - 2] = schar_from_ascii(' ');
         }
-        grid_line_fill(rcol - ellipsis_width, rcol, schar_from_ascii('.'), orig_attr);
+        linebuf_char[rcol - 1] = fcs_trunc != NUL ? fcs_trunc : schar_from_ascii('>');
       }
     }
 

test/functional/ui/popupmenu_spec.lua

@@ -5626,7 +5626,7 @@ describe('builtin popupmenu', function()
     end)
 
     -- oldtest: Test_pum_maxwidth()
-    it('"pummaxwidth"', function()
+    it("'pummaxwidth'", function()
       screen:try_resize(60, 8)
       api.nvim_buf_set_lines(0, 0, -1, true, {
         '123456789_123456789_123456789_a',
@@ -5683,8 +5683,8 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ## grid 4
-          {s: 1234567...}|
+          {s: 123456789>}|
-          {n: 1234567...}|
+          {n: 123456789>}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 3, 11, false, 100, 1, 3, 11 } },
         })
@@ -5693,8 +5693,8 @@ describe('builtin popupmenu', function()
           123456789_123456789_123456789_a                             |
           123456789_123456789_123456789_b                             |
                       123456789_123456789_123456789_a^                 |
-          {1:~          }{s: 1234567...}{1:                                      }|
+          {1:~          }{s: 123456789>}{1:                                      }|
-          {1:~          }{n: 1234567...}{1:                                      }|
+          {1:~          }{n: 123456789>}{1:                                      }|
           {1:~                                                           }|*2
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ]])
@@ -5717,8 +5717,8 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ## grid 4
-          {s: 123456789_1234567...}|
+          {s: 123456789_123456789>}|
-          {n: 123456789_1234567...}|
+          {n: 123456789_123456789>}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 3, 11, false, 100, 1, 3, 11 } },
         })
@@ -5727,8 +5727,8 @@ describe('builtin popupmenu', function()
           123456789_123456789_123456789_a                             |
           123456789_123456789_123456789_b                             |
                       123456789_123456789_123456789_a^                 |
-          {1:~          }{s: 123456789_1234567...}{1:                            }|
+          {1:~          }{s: 123456789_123456789>}{1:                            }|
-          {1:~          }{n: 123456789_1234567...}{1:                            }|
+          {1:~          }{n: 123456789_123456789>}{1:                            }|
           {1:~                                                           }|*2
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ]])
@@ -5751,8 +5751,8 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ## grid 4
-          {s: 12345...}|
+          {s: 1234567>}|
-          {n: 12345...}|
+          {n: 1234567>}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 3, 11, false, 100, 1, 3, 11 } },
         })
@@ -5761,8 +5761,8 @@ describe('builtin popupmenu', function()
           123456789_123456789_123456789_a                             |
           123456789_123456789_123456789_b                             |
                       123456789_123456789_123456789_a^                 |
-          {1:~          }{s: 12345...}{1:                                        }|
+          {1:~          }{s: 1234567>}{1:                                        }|
-          {1:~          }{n: 12345...}{1:                                        }|
+          {1:~          }{n: 1234567>}{1:                                        }|
           {1:~                                                           }|*2
           {2:-- Keyword Local completion (^N^P) }{5:match 1 of 2}             |
         ]])
@@ -5786,8 +5786,8 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- }{5:match 1 of 2}                 |
         ## grid 4
-          {s: 12345...}|
+          {s: 1234567>}|
-          {n: 12345...}|
+          {n: 1234567>}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 4, 11, false, 100, 1, 4, 11 } },
         })
@@ -5797,8 +5797,8 @@ describe('builtin popupmenu', function()
           123456789_123456789_123456789_b |
                       123456789_123456789_|
           123456789_a^                     |
-          {1:~          }{s: 12345...}{1:            }|
+          {1:~          }{s: 1234567>}{1:            }|
-          {1:~          }{n: 12345...}{1:            }|
+          {1:~          }{n: 1234567>}{1:            }|
           {1:~                               }|*3
           {2:-- }{5:match 1 of 2}                 |
         ]])
@@ -5810,18 +5810,36 @@ describe('builtin popupmenu', function()
     it("'pummaxwidth' with multibyte", function()
       screen:try_resize(60, 8)
       exec([[
+        let g:change = 0
         func Omni_test(findstart, base)
           if a:findstart
             return col(".")
           endif
+          if g:change == 0
             return [
               \ #{word: "123456789_123456789_123456789_"},
               \ #{word: "一二三四五六七八九十"},
               \ #{word: "abcdefghij"},
               \ #{word: "上下左右"},
               \ ]
+          elseif g:change == 1
+            return [
+              \ #{word: "foo", menu: "fooMenu", kind: "fooKind"},
+              \ #{word: "bar", menu: "barMenu", kind: "barKind"},
+              \ #{word: "baz", menu: "bazMenu", kind: "bazKind"},
+              \ ]
+          elseif g:change == 2
+            return [
+              \ #{word: "foo", menu: "fooMenu", kind: "fooKind"},
+              \ #{word: "bar", menu: "fooMenu", kind: "一二三四"},
+              \ #{word: "一二三四五", kind: "multi"},
+              \ ]
+          else
+            return [#{word: "bar", menu: "fooMenu", kind: "一二三"}]
+          endif
         endfunc
         set omnifunc=Omni_test
+        set cot+=menuone
       ]])
 
       feed('S<C-X><C-O>')
@@ -5871,9 +5889,9 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
         ## grid 4
-          {s:1234567...}|
+          {s:123456789>}|
-          {n:一二三 ...}|
+          {n:一二三四 >}|
-          {n:abcdefghij}|
+          {n:abcdefghi>}|
           {n:上下左右  }|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
@@ -5881,9 +5899,9 @@ describe('builtin popupmenu', function()
       else
         screen:expect([[
           123456789_123456789_123456789_^                              |
-          {s:1234567...}{1:                                                  }|
+          {s:123456789>}{1:                                                  }|
-          {n:一二三 ...}{1:                                                  }|
+          {n:一二三四 >}{1:                                                  }|
-          {n:abcdefghij}{1:                                                  }|
+          {n:abcdefghi>}{1:                                                  }|
           {n:上下左右  }{1:                                                  }|
           {1:~                                                           }|*2
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
@@ -5905,9 +5923,9 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
         ## grid 4
-          {s:...7654321}|
+          {s:<987654321}|
-          {n:... 三二一}|
+          {n:< 四三二一}|
-          {n:jihgfedcba}|
+          {n:<ihgfedcba}|
           {n:  右左下上}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 50, false, 100, 1, 1, 50 } },
@@ -5915,9 +5933,9 @@ describe('builtin popupmenu', function()
       else
         screen:expect([[
                                        ^ _987654321_987654321_987654321|
-          {1:                                                  }{s:...7654321}|
+          {1:                                                  }{s:<987654321}|
-          {1:                                                  }{n:... 三二一}|
+          {1:                                                  }{n:< 四三二一}|
-          {1:                                                  }{n:jihgfedcba}|
+          {1:                                                  }{n:<ihgfedcba}|
           {1:                                                  }{n:  右左下上}|
           {1:                                                           ~}|*2
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
@@ -5940,43 +5958,29 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
         ## grid 4
-          {s:12}|
+          {s:1>}|
-          {n:一}|
+          {n: >}|
-          {n:ab}|
+          {n:a>}|
-          {n:上}|
+          {n: >}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
         })
       else
         screen:expect([[
           123456789_123456789_123456789_^                              |
-          {s:12}{1:                                                          }|
+          {s:1>}{1:                                                          }|
-          {n:一}{1:                                                          }|
+          {n: >}{1:                                                          }|
-          {n:ab}{1:                                                          }|
+          {n:a>}{1:                                                          }|
-          {n:上}{1:                                                          }|
+          {n: >}{1:                                                          }|
           {1:~                                                           }|*2
           {2:-- Omni completion (^O^N^P) }{5:match 1 of 4}                    |
         ]])
       end
       feed('<Esc>')
-    end)
-
-    it([['pummaxwidth' works with "kind" and "menu"]], function()
-      exec([[
-        func Omni_test(findstart, base)
-          if a:findstart
-            return col(".")
-          endif
-          return [
-            \ #{word: "foo", menu: "fooMenu", kind: "fooKind"},
-            \ #{word: "bar", menu: "barMenu", kind: "barKind"},
-            \ #{word: "baz", menu: "bazMenu", kind: "bazKind"},
-            \ ]
-        endfunc
-        set omnifunc=Omni_test
-      ]])
 
+      screen:try_resize(32, 20)
       command('set pummaxwidth=14')
+      command('let g:change=1')
       feed('S<C-X><C-O>')
       if multigrid then
         screen:expect({
@@ -5990,24 +5994,155 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- }{5:match 1 of 3}                 |
         ## grid 4
-          {s:foo fooKind...}|
+          {s:foo fooKind f>}|
-          {n:bar barKind...}|
+          {n:bar barKind b>}|
-          {n:baz bazKind...}|
+          {n:baz bazKind b>}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
         })
       else
         screen:expect([[
           foo^                             |
-          {s:foo fooKind...}{1:                  }|
+          {s:foo fooKind f>}{1:                  }|
-          {n:bar barKind...}{1:                  }|
+          {n:bar barKind b>}{1:                  }|
-          {n:baz bazKind...}{1:                  }|
+          {n:baz bazKind b>}{1:                  }|
           {1:~                               }|*15
           {2:-- }{5:match 1 of 3}                 |
         ]])
       end
       feed('<Esc>')
 
+      -- Unicode Character U+2026 but one cell
+      command('set fcs+=trunc:…')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+          foo^                             |
+          {1:~                               }|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:foo fooKind f…}|
+          {n:bar barKind b…}|
+          {n:baz bazKind b…}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
+        })
+      else
+        screen:expect([[
+          foo^                             |
+          {s:foo fooKind f…}{1:                  }|
+          {n:bar barKind b…}{1:                  }|
+          {n:baz bazKind b…}{1:                  }|
+          {1:~                               }|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+
+      command('let g:change=2')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+          foo^                             |
+          {1:~                               }|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:foo        fo…}|
+          {n:bar        一…}|
+          {n:一二三四五 mu…}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
+        })
+      else
+        screen:expect([[
+          foo^                             |
+          {s:foo        fo…}{1:                  }|
+          {n:bar        一…}{1:                  }|
+          {n:一二三四五 mu…}{1:                  }|
+          {1:~                               }|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+
+      command('set fcs&')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+          foo^                             |
+          {1:~                               }|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:foo        fo>}|
+          {n:bar        一>}|
+          {n:一二三四五 mu>}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
+        })
+      else
+        screen:expect([[
+          foo^                             |
+          {s:foo        fo>}{1:                  }|
+          {n:bar        一>}{1:                  }|
+          {n:一二三四五 mu>}{1:                  }|
+          {1:~                               }|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+
+      command('set fcs=trunc:_')
+      command('let g:change=1')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+          foo^                             |
+          {1:~                               }|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:foo fooKind f_}|
+          {n:bar barKind b_}|
+          {n:baz bazKind b_}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
+        })
+      else
+        screen:expect([[
+          foo^                             |
+          {s:foo fooKind f_}{1:                  }|
+          {n:bar barKind b_}{1:                  }|
+          {n:baz bazKind b_}{1:                  }|
+          {1:~                               }|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+      command('set fcs&')
+
       command('set rightleft')
       feed('S<C-X><C-O>')
       if multigrid then
@@ -6022,26 +6157,120 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- }{5:match 1 of 3}                 |
         ## grid 4
-          {s:...dniKoof oof}|
+          {s:<f dniKoof oof}|
-          {n:...dniKrab rab}|
+          {n:<b dniKrab rab}|
-          {n:...dniKzab zab}|
+          {n:<b dniKzab zab}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 18, false, 100, 1, 1, 18 } },
         })
       else
         screen:expect([[
                                       ^ oof|
-          {1:                  }{s:...dniKoof oof}|
+          {1:                  }{s:<f dniKoof oof}|
-          {1:                  }{n:...dniKrab rab}|
+          {1:                  }{n:<b dniKrab rab}|
-          {1:                  }{n:...dniKzab zab}|
+          {1:                  }{n:<b dniKzab zab}|
           {1:                               ~}|*15
           {2:-- }{5:match 1 of 3}                 |
         ]])
       end
       feed('<Esc>')
+
+      command('let g:change=2')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+                                      ^ oof|
+          {1:                               ~}|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:<of        oof}|
+          {n:<一        rab}|
+          {n:<um 五四三二一}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 18, false, 100, 1, 1, 18 } },
+        })
+      else
+        screen:expect([[
+                                      ^ oof|
+          {1:                  }{s:<of        oof}|
+          {1:                  }{n:<一        rab}|
+          {1:                  }{n:<um 五四三二一}|
+          {1:                               ~}|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+
+      command('set fcs+=trunc:…')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+                                      ^ oof|
+          {1:                               ~}|*18
+        ## grid 3
+          {2:-- }{5:match 1 of 3}                 |
+        ## grid 4
+          {s:…of        oof}|
+          {n:…一        rab}|
+          {n:…um 五四三二一}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 18, false, 100, 1, 1, 18 } },
+        })
+      else
+        screen:expect([[
+                                      ^ oof|
+          {1:                  }{s:…of        oof}|
+          {1:                  }{n:…一        rab}|
+          {1:                  }{n:…um 五四三二一}|
+          {1:                               ~}|*15
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+      end
+      feed('<Esc>')
+
+      command('set fcs&')
+      command('let g:change=3')
+      feed('S<C-X><C-O>')
+      if multigrid then
+        screen:expect({
+          grid = [[
+        ## grid 1
+          [2:--------------------------------]|*19
+          [3:--------------------------------]|
+        ## grid 2
+                                      ^ rab|
+          {1:                               ~}|*18
+        ## grid 3
+          {2:-- The only match}               |
+        ## grid 4
+          {s:<of 三二一 rab}|
+        ]],
+          float_pos = { [4] = { -1, 'NW', 2, 1, 18, false, 100, 1, 1, 18 } },
+        })
+      else
+        screen:expect([[
+                                      ^ rab|
+          {1:                  }{s:<of 三二一 rab}|
+          {1:                               ~}|*17
+          {2:-- The only match}               |
+        ]])
+      end
+      feed('<Esc>')
       command('set norightleft')
 
-      command('set pummaxwidth=13')
+      command('set pummaxwidth=4')
+      command('let g:change=2')
       feed('S<C-X><C-O>')
       if multigrid then
         screen:expect({
@@ -6055,18 +6284,18 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- }{5:match 1 of 3}                 |
         ## grid 4
-          {s:foo fooKin...}|
+          {s:foo>}|
-          {n:bar barKin...}|
+          {n:bar>}|
-          {n:baz bazKin...}|
+          {n:一 >}|
         ]],
           float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100, 1, 1, 0 } },
         })
       else
         screen:expect([[
           foo^                             |
-          {s:foo fooKin...}{1:                   }|
+          {s:foo>}{1:                            }|
-          {n:bar barKin...}{1:                   }|
+          {n:bar>}{1:                            }|
-          {n:baz bazKin...}{1:                   }|
+          {n:一 >}{1:                            }|
           {1:~                               }|*15
           {2:-- }{5:match 1 of 3}                 |
         ]])
@@ -6087,18 +6316,18 @@ describe('builtin popupmenu', function()
         ## grid 3
           {2:-- }{5:match 1 of 3}                 |
         ## grid 4
-          {s:...niKoof oof}|
+          {s:<oof}|
-          {n:...niKrab rab}|
+          {n:<rab}|
-          {n:...niKzab zab}|
+          {n:< 一}|
         ]],
-          float_pos = { [4] = { -1, 'NW', 2, 1, 19, false, 100, 1, 1, 19 } },
+          float_pos = { [4] = { -1, 'NW', 2, 1, 28, false, 100, 1, 1, 28 } },
         })
       else
         screen:expect([[
                                       ^ oof|
-          {1:                   }{s:...niKoof oof}|
+          {1:                            }{s:<oof}|
-          {1:                   }{n:...niKrab rab}|
+          {1:                            }{n:<rab}|
-          {1:                   }{n:...niKzab zab}|
+          {1:                            }{n:< 一}|
           {1:                               ~}|*15
           {2:-- }{5:match 1 of 3}                 |
         ]])

test/old/testdir/gen_opt_test.vim

@@ -235,8 +235,9 @@ let test_values = {
       \ 'fileformats': [['', 'dos', 'dos,unix'], ['xxx']],
       \ 'fillchars': [['', 'stl:x', 'stlnc:x', 'vert:x', 'fold:x', 'foldopen:x',
       \		'foldclose:x', 'foldsep:x', 'diff:x', 'eob:x', 'lastline:x',
-      \		'stl:\ ,vert:\|,fold:\\,diff:x'],
+      \		'trunc:_', 'trunc:_,eob:x,trunc:_',
-      \		['xxx', 'vert:']],
+      \		'stl:\ ,vert:\|,fold:\\,trunc:…,diff:x'],
+      \		['xxx', 'vert:', 'trunc:', "trunc:\b"]],
       \ 'foldclose': [['', 'all'], ['xxx']],
       \ 'foldmethod': [['manual', 'indent', 'expr', 'marker', 'syntax', 'diff'],
       \		['', 'xxx', 'expr,diff']],

test/old/testdir/test_popup.vim

@@ -2024,8 +2024,9 @@ func Test_pum_maxwidth()
   call term_sendkeys(buf, "\<Esc>3Gdd\"zp")
 
   call term_sendkeys(buf, ":set lines=10 columns=32\<CR>")
+  call TermWait(buf, 50)
   call term_sendkeys(buf, "GA\<C-N>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_09', {'rows': 10, 'cols': 32})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_05', {'rows': 10, 'cols': 32})
   call term_sendkeys(buf, "\<Esc>3Gdd\"zp")
 
   call StopVimInTerminal(buf)
@@ -2035,106 +2036,129 @@ func Test_pum_maxwidth_multibyte()
   CheckScreendump
 
   let lines =<< trim END
+    let g:change = 0
     func Omni_test(findstart, base)
       if a:findstart
         return col(".")
       endif
+      if g:change == 0
         return [
           \ #{word: "123456789_123456789_123456789_"},
           \ #{word: "一二三四五六七八九十"},
           \ #{word: "abcdefghij"},
           \ #{word: "上下左右"},
           \ ]
-    endfunc
+      elseif g:change == 1
-    set omnifunc=Omni_test
-  END
-  call writefile(lines, 'Xtest', 'D')
-  let  buf = RunVimInTerminal('-S Xtest', {})
-  call TermWait(buf)
-
-  call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_05', {'rows': 8})
-  call term_sendkeys(buf, "\<ESC>")
-
-  call term_sendkeys(buf, ":set pummaxwidth=10\<CR>")
-  call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_06', {'rows': 8})
-  call term_sendkeys(buf, "\<ESC>")
-
-  if has('rightleft')
-    call term_sendkeys(buf, ":set rightleft\<CR>")
-    call term_sendkeys(buf, "S\<C-X>\<C-O>")
-    call VerifyScreenDump(buf, 'Test_pum_maxwidth_07', {'rows': 8})
-    call term_sendkeys(buf, "\<Esc>:set norightleft\<CR>")
-  endif
-
-  call term_sendkeys(buf, ":set pummaxwidth=2\<CR>")
-  call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_08', {'rows': 8})
-  call term_sendkeys(buf, "\<ESC>")
-
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_pum_maxwidth_with_many_items()
-  CheckScreendump
-
-  let lines =<< trim END
-    func Omni_test(findstart, base)
-    if a:findstart
-      return col(".")
-    endif
         return [
           \ #{word: "foo", menu: "fooMenu", kind: "fooKind"},
           \ #{word: "bar", menu: "barMenu", kind: "barKind"},
           \ #{word: "baz", menu: "bazMenu", kind: "bazKind"},
           \ ]
+      elseif g:change == 2
+        return [
+          \ #{word: "foo", menu: "fooMenu", kind: "fooKind"},
+          \ #{word: "bar", menu: "fooMenu", kind: "一二三四"},
+          \ #{word: "一二三四五", kind: "multi"},
+          \ ]
+      else
+        return [#{word: "bar", menu: "fooMenu", kind: "一二三"}]
+      endif
     endfunc
     set omnifunc=Omni_test
+    set cot+=menuone
   END
   call writefile(lines, 'Xtest', 'D')
   let  buf = RunVimInTerminal('-S Xtest', {})
   call TermWait(buf)
 
-  call term_sendkeys(buf, ":set pummaxwidth=20\<CR>")
   call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_01', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_06', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=19\<CR>")
+  call term_sendkeys(buf, ":set pummaxwidth=10\<CR>")
   call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_02', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_07', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=18\<CR>")   " display Ellipsis
+  if has('rightleft')
+    call term_sendkeys(buf, ":set rightleft\<CR>")
     call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_03', {'rows': 8})
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_08', {'rows': 8})
+    call term_sendkeys(buf, "\<Esc>:set norightleft\<CR>")
+  endif
+
+  call term_sendkeys(buf, ":set pummaxwidth=2\<CR>")
+  call term_sendkeys(buf, "S\<C-X>\<C-O>")
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_09', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=16\<CR>")   " display Ellipsis
+  call term_sendkeys(buf, ":set pummaxwidth=14\<CR>")
-  call term_sendkeys(buf, "S\<C-X>\<C-O>")
+  call term_sendkeys(buf, ":let g:change=1\<CR>S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_04', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_10', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=15\<CR>")
+  " Unicode Character U+2026 but one cell
+  call term_sendkeys(buf, ":set fcs+=trunc:…\<CR>")
   call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_05', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_11', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=12\<CR>")
+  call term_sendkeys(buf, ":let g:change=2\<CR>S\<C-X>\<C-O>")
-  call term_sendkeys(buf, "S\<C-X>\<C-O>")
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_12', {'rows': 8})
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_06', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=10\<CR>")   " display Ellipsis
+  call term_sendkeys(buf, ":set fcs&\<CR>")
   call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_07', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_13', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
 
-  call term_sendkeys(buf, ":set pummaxwidth=1\<CR>")
+  call term_sendkeys(buf, ":set fcs=trunc:_\<CR>")
+  call term_sendkeys(buf, ":let g:change=1\<CR>")
+  call TermWait(buf, 50)
   call term_sendkeys(buf, "S\<C-X>\<C-O>")
-  call VerifyScreenDump(buf, 'Test_pum_maxwidth_with_many_items_08', {'rows': 8})
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_14', {'rows': 8})
   call term_sendkeys(buf, "\<ESC>")
+  call term_sendkeys(buf, ":set fcs&\<CR>")
+
+  if has('rightleft')
+    call term_sendkeys(buf, ":set rightleft\<CR>")
+    call term_sendkeys(buf, "S\<C-X>\<C-O>")
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_15', {'rows': 8})
+    call term_sendkeys(buf, "\<ESC>")
+
+    call term_sendkeys(buf, ":let g:change=2\<CR>")
+    call TermWait(buf, 50)
+    call term_sendkeys(buf, "S\<C-X>\<C-O>")
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_16', {'rows': 8})
+    call term_sendkeys(buf, "\<ESC>")
+
+    call term_sendkeys(buf, ":set fcs+=trunc:…\<CR>")
+    call term_sendkeys(buf, "S\<C-X>\<C-O>")
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_17', {'rows': 8})
+    call term_sendkeys(buf, "\<ESC>")
+
+    call term_sendkeys(buf, ":set fcs&\<CR>")
+    call term_sendkeys(buf, ":let g:change=3\<CR>")
+    call TermWait(buf, 50)
+    call term_sendkeys(buf, "S\<C-X>\<C-O>")
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_18', {'rows': 8})
+    call term_sendkeys(buf, "\<Esc>:set norightleft\<CR>")
+  endif
+
+  call term_sendkeys(buf, ":set pummaxwidth=4\<CR>")
+  call term_sendkeys(buf, ":let g:change=2\<CR>")
+  call TermWait(buf, 50)
+  call term_sendkeys(buf, "S\<C-X>\<C-O>")
+  call VerifyScreenDump(buf, 'Test_pum_maxwidth_19', {'rows': 8})
+  call term_sendkeys(buf, "\<ESC>")
+
+  if has('rightleft')
+    call term_sendkeys(buf, ":set rightleft\<CR>")
+    call TermWait(buf, 50)
+    call term_sendkeys(buf, "S\<C-X>\<C-O>")
+    call VerifyScreenDump(buf, 'Test_pum_maxwidth_20', {'rows': 8})
+    call term_sendkeys(buf, "\<Esc>:set norightleft\<CR>")
+  endif
 
   call StopVimInTerminal(buf)
 endfunc