Patch 9.0.0466
Problem:    Virtual text wrong after adding line break after line.
Solution:   Pass an "eol" flag to where text properties are adjusted.
            (closes #11131)
Files:      src/change.c, src/textprop.c, src/proto/textprop.pro,
            src/testdir/test_textprop.vim,
            src/testdir/dumps/Test_prop_below_split_line_1.dump


*** ../vim-9.0.0465/src/change.c        2022-09-02 17:12:03.668881359 +0100
--- src/change.c        2022-09-14 21:59:33.083561796 +0100
***************
*** 1404,1415 ****
--- 1404,1422 ----
      int               vreplace_mode;
      int               did_append;             // appended a new line
      int               saved_pi = curbuf->b_p_pi; // copy of preserveindent 
setting
+ #ifdef FEAT_PROP_POPUP
+     int               at_eol;                 // cursor after last character
+ #endif
  
      // make a copy of the current line so we can mess with it
      saved_line = vim_strsave(ml_get_curline());
      if (saved_line == NULL)       // out of memory!
        return FALSE;
  
+ #ifdef FEAT_PROP_POPUP
+     at_eol = curwin->w_cursor.col >= (int)STRLEN(saved_line);
+ #endif
+ 
      if (State & VREPLACE_FLAG)
      {
        // With MODE_VREPLACE we make a copy of the next line, which we will be
***************
*** 2133,2139 ****
        if ((State & MODE_INSERT) && (State & VREPLACE_FLAG) == 0)
            // Properties after the split move to the next line.
            adjust_props_for_split(curwin->w_cursor.lnum, curwin->w_cursor.lnum,
!                   curwin->w_cursor.col + 1, 0);
  #endif
      }
      else
--- 2140,2146 ----
        if ((State & MODE_INSERT) && (State & VREPLACE_FLAG) == 0)
            // Properties after the split move to the next line.
            adjust_props_for_split(curwin->w_cursor.lnum, curwin->w_cursor.lnum,
!                   curwin->w_cursor.col + 1, 0, at_eol);
  #endif
      }
      else
*** ../vim-9.0.0465/src/textprop.c      2022-09-14 12:06:45.783430773 +0100
--- src/textprop.c      2022-09-14 22:00:42.731408284 +0100
***************
*** 2232,2244 ****
   * "lnum_top" is the top line.
   * "kept" is the number of bytes kept in the first line, while
   * "deleted" is the number of bytes deleted.
   */
      void
  adjust_props_for_split(
!       linenr_T lnum_props,
!       linenr_T lnum_top,
!       int kept,
!       int deleted)
  {
      char_u    *props;
      int               count;
--- 2232,2246 ----
   * "lnum_top" is the top line.
   * "kept" is the number of bytes kept in the first line, while
   * "deleted" is the number of bytes deleted.
+  * "at_eol" is true if the split is after the end of the line.
   */
      void
  adjust_props_for_split(
!       linenr_T    lnum_props,
!       linenr_T    lnum_top,
!       int         kept,
!       int         deleted,
!       int         at_eol)
  {
      char_u    *props;
      int               count;
***************
*** 2276,2284 ****
        // a text prop "above" behaves like it is on the first text column
        prop_col = (prop.tp_flags & TP_FLAG_ALIGN_ABOVE) ? 1 : prop.tp_col;
  
!       cont_prev = prop_col != MAXCOL && prop_col + !start_incl <= kept;
!       cont_next = prop_col != MAXCOL
!                             && skipped <= prop_col + prop.tp_len - !end_incl;
        // when a prop has text it is never copied
        if (prop.tp_id < 0 && cont_next)
            cont_prev = FALSE;
--- 2278,2293 ----
        // a text prop "above" behaves like it is on the first text column
        prop_col = (prop.tp_flags & TP_FLAG_ALIGN_ABOVE) ? 1 : prop.tp_col;
  
!       if (prop_col == MAXCOL)
!       {
!           cont_prev = at_eol;
!           cont_next = !at_eol;
!       }
!       else
!       {
!           cont_prev = prop_col + !start_incl <= kept;
!           cont_next = skipped <= prop_col + prop.tp_len - !end_incl;
!       }
        // when a prop has text it is never copied
        if (prop.tp_id < 0 && cont_next)
            cont_prev = FALSE;
***************
*** 2297,2303 ****
  
        // Only add the property to the next line if the length is bigger than
        // zero.
!       if ((cont_next || prop_col == MAXCOL) && ga_grow(&nextprop, 1) == OK)
        {
            textprop_T *p = ((textprop_T *)nextprop.ga_data) + nextprop.ga_len;
  
--- 2306,2312 ----
  
        // Only add the property to the next line if the length is bigger than
        // zero.
!       if (cont_next && ga_grow(&nextprop, 1) == OK)
        {
            textprop_T *p = ((textprop_T *)nextprop.ga_data) + nextprop.ga_len;
  
*** ../vim-9.0.0465/src/proto/textprop.pro      2022-09-12 17:50:42.782378262 
+0100
--- src/proto/textprop.pro      2022-09-14 21:59:16.187599320 +0100
***************
*** 22,27 ****
  void clear_global_prop_types(void);
  void clear_buf_prop_types(buf_T *buf);
  int adjust_prop_columns(linenr_T lnum, colnr_T col, int bytes_added, int 
flags);
! void adjust_props_for_split(linenr_T lnum_props, linenr_T lnum_top, int kept, 
int deleted);
  void prepend_joined_props(char_u *new_props, int propcount, int 
*props_remaining, linenr_T lnum, int last_line, long col, int removed);
  /* vim: set ft=c : */
--- 22,27 ----
  void clear_global_prop_types(void);
  void clear_buf_prop_types(buf_T *buf);
  int adjust_prop_columns(linenr_T lnum, colnr_T col, int bytes_added, int 
flags);
! void adjust_props_for_split(linenr_T lnum_props, linenr_T lnum_top, int kept, 
int deleted, int at_eol);
  void prepend_joined_props(char_u *new_props, int propcount, int 
*props_remaining, linenr_T lnum, int last_line, long col, int removed);
  /* vim: set ft=c : */
*** ../vim-9.0.0465/src/testdir/test_textprop.vim       2022-09-14 
16:09:53.344308323 +0100
--- src/testdir/test_textprop.vim       2022-09-14 22:09:26.310297019 +0100
***************
*** 2908,2913 ****
--- 2908,2936 ----
    call prop_type_delete('indented')
  endfunc
  
+ func Test_prop_below_split_line()
+   CheckRunVimInTerminal
+ 
+   let lines =<< trim END
+       vim9script
+       setline(1, ['one one one', 'two two two', 'three three three'])
+       prop_type_add('test', {highlight: 'ModeMsg'})
+       prop_add(2, 0, {
+           text:  '└─ Virtual text below the 2nd line',
+           type: 'test',
+           text_align: 'below',
+           text_padding_left: 3
+       })
+   END
+   call writefile(lines, 'XscriptPropBelowSpitLine', 'D')
+   let buf = RunVimInTerminal('-S XscriptPropBelowSpitLine', #{rows: 8})
+   call term_sendkeys(buf, "2GA\<CR>xx")
+   call VerifyScreenDump(buf, 'Test_prop_below_split_line_1', {})
+ 
+   call term_sendkeys(buf, "\<Esc>")
+   call StopVimInTerminal(buf)
+ endfunc
+ 
  func Test_props_with_text_override()
    CheckRunVimInTerminal
  
***************
*** 2920,2926 ****
        hi CursorLine cterm=underline ctermbg=lightgrey
        set cursorline
    END
!   call writefile(lines, 'XscriptPropsOverride')
    let buf = RunVimInTerminal('-S XscriptPropsOverride', #{rows: 6, cols: 60})
    call VerifyScreenDump(buf, 'Test_prop_with_text_override_1', {})
  
--- 2943,2949 ----
        hi CursorLine cterm=underline ctermbg=lightgrey
        set cursorline
    END
!   call writefile(lines, 'XscriptPropsOverride', 'D')
    let buf = RunVimInTerminal('-S XscriptPropsOverride', #{rows: 6, cols: 60})
    call VerifyScreenDump(buf, 'Test_prop_with_text_override_1', {})
  
***************
*** 2929,2935 ****
    call VerifyScreenDump(buf, 'Test_prop_with_text_override_2', {})
  
    call StopVimInTerminal(buf)
-   call delete('XscriptPropsOverride')
  endfunc
  
  func Test_props_with_text_CursorMoved()
--- 2952,2957 ----
*** ../vim-9.0.0465/src/testdir/dumps/Test_prop_below_split_line_1.dump 
2022-09-14 22:12:20.225938090 +0100
--- src/testdir/dumps/Test_prop_below_split_line_1.dump 2022-09-14 
22:09:35.734277489 +0100
***************
*** 0 ****
--- 1,8 ----
+ |o+0&#ffffff0|n|e| |o|n|e| |o|n|e| @63
+ |t|w|o| |t|w|o| |t|w|o| @63
+ @3|└+2&&|─| |V|i|r|t|u|a|l| |t|e|x|t| |b|e|l|o|w| |t|h|e| |2|n|d| |l|i|n|e| 
+0&&@37
+ |x@1> @72
+ |t|h|r|e@1| |t|h|r|e@1| |t|h|r|e@1| @57
+ |~+0#4040ff13&| @73
+ |~| @73
+ |-+2#0000000&@1| |I|N|S|E|R|T| |-@1| +0&&@44|3|,|3| @10|A|l@1| 
*** ../vim-9.0.0465/src/version.c       2022-09-14 22:11:47.674005040 +0100
--- src/version.c       2022-09-14 21:55:19.636139508 +0100
***************
*** 705,706 ****
--- 705,708 ----
  {   /* Add new patch number below this line */
+ /**/
+     466,
  /**/

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///                                                                      \\\
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