Patch 9.0.0608
Problem:    With spell checking, deleting a full stop at the end of a line
            does not update SpellCap at the start of the next line.
Solution:   Update the next line when characters have been deleted.  Also when
            using undo.
Files:      src/edit.c, src/change.c, src/undo.c, src/testdir/test_spell.vim,
            src/testdir/dumps/Test_spell_4.dump,
            src/testdir/dumps/Test_spell_5.dump


*** ../vim-9.0.0607/src/edit.c  2022-09-27 12:30:53.222180148 +0100
--- src/edit.c  2022-09-27 16:06:10.617797815 +0100
***************
*** 3607,3619 ****
  
  #ifdef FEAT_SPELL
      check_spell_redraw();
- 
-     // When text has been changed in this line, possibly the start of the next
-     // line may have SpellCap that should be removed or it needs to be
-     // displayed.  Schedule the next line for redrawing just in case.
-     if (spell_check_window(curwin)
-                        && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
-       redrawWinline(curwin, curwin->w_cursor.lnum + 1);
  #endif
  
      temp = curwin->w_cursor.col;
--- 3607,3612 ----
*** ../vim-9.0.0607/src/change.c        2022-09-14 22:13:06.069843985 +0100
--- src/change.c        2022-09-27 16:01:51.843216229 +0100
***************
*** 709,714 ****
--- 709,721 ----
      changedOneline(curbuf, lnum);
      changed_common(lnum, col, lnum + 1, 0L);
  
+ #ifdef FEAT_SPELL
+     // When text has been changed at the end of the line, possibly the start 
of
+     // the next line may have SpellCap that should be removed or it needs to 
be
+     // displayed.  Schedule the next line for redrawing just in case.
+     if (spell_check_window(curwin) && lnum < curbuf->b_ml.ml_line_count)
+       redrawWinline(curwin, lnum + 1);
+ #endif
  #ifdef FEAT_DIFF
      // Diff highlighting in other diff windows may need to be updated too.
      if (curwin->w_p_diff)
*** ../vim-9.0.0607/src/undo.c  2022-08-14 14:16:08.003582142 +0100
--- src/undo.c  2022-09-27 16:15:29.599237760 +0100
***************
*** 2835,2841 ****
--- 2835,2850 ----
                curbuf->b_op_end.lnum += newsize - oldsize;
        }
        if (oldsize > 0 || newsize > 0)
+       {
            changed_lines(top + 1, 0, bot, newsize - oldsize);
+ #ifdef FEAT_SPELL
+           // When text has been changed, possibly the start of the next line
+           // may have SpellCap that should be removed or it needs to be
+           // displayed.  Schedule the next line for redrawing just in case.
+           if (spell_check_window(curwin) && bot <= curbuf->b_ml.ml_line_count)
+               redrawWinline(curwin, bot);
+ #endif
+       }
  
        // Set the '[ mark.
        if (top + 1 < curbuf->b_op_start.lnum)
*** ../vim-9.0.0607/src/testdir/test_spell.vim  2022-09-25 20:58:08.801019377 
+0100
--- src/testdir/test_spell.vim  2022-09-27 16:26:36.480548190 +0100
***************
*** 987,992 ****
--- 987,1000 ----
    call term_sendkeys(buf, "3GANot\<Esc>")
    call VerifyScreenDump(buf, 'Test_spell_3', {})
  
+   " Deleting a full stop removes missing Cap in next line
+   call term_sendkeys(buf, "5Gddk$x")
+   call VerifyScreenDump(buf, 'Test_spell_4', {})
+ 
+   " Undo also updates the next line (go to command line to remove message)
+   call term_sendkeys(buf, "u:\<Esc>")
+   call VerifyScreenDump(buf, 'Test_spell_5', {})
+ 
    " clean up
    call StopVimInTerminal(buf)
    call delete('XtestSpellCap')
*** ../vim-9.0.0607/src/testdir/dumps/Test_spell_4.dump 2022-09-27 
16:27:40.260299402 +0100
--- src/testdir/dumps/Test_spell_4.dump 2022-09-27 16:24:24.837064787 +0100
***************
*** 0 ****
--- 1,8 ----
+ | +0&#ffffff0@2|T|h|i|s| |l|i|n|e| |h|a|s| |a| |s+0&#ffd7d7255|e|p|l@1| 
+0&#ffffff0|e|r@1|o|r|.| |a+0&#5fd7ff255|n|d| +0&#ffffff0|m|i|s@1|i|n|g| 
|c|a|p|s| |a|n|d| |t|r|a|i|l|i|n|g| |s|p|a|c|e|s|.| @5
+ |a+0&#5fd7ff255|n|o|t|h|e|r| +0&#ffffff0|m|i|s@1|i|n|g| |c|a|p| |h|e|r|e|.| 
@49
+ |N|o|t| @71
+ |a|n|d| |h|e|r>e| @66
+ |a|n|d| |h|e|r|e|.| @65
+ |~+0#4040ff13&| @73
+ |~| @73
+ | +0#0000000&@56|4|,|8| @10|A|l@1| 
*** ../vim-9.0.0607/src/testdir/dumps/Test_spell_5.dump 2022-09-27 
16:27:40.260299402 +0100
--- src/testdir/dumps/Test_spell_5.dump 2022-09-27 16:24:24.837064787 +0100
***************
*** 0 ****
--- 1,8 ----
+ | +0&#ffffff0@2|T|h|i|s| |l|i|n|e| |h|a|s| |a| |s+0&#ffd7d7255|e|p|l@1| 
+0&#ffffff0|e|r@1|o|r|.| |a+0&#5fd7ff255|n|d| +0&#ffffff0|m|i|s@1|i|n|g| 
|c|a|p|s| |a|n|d| |t|r|a|i|l|i|n|g| |s|p|a|c|e|s|.| @5
+ |a+0&#5fd7ff255|n|o|t|h|e|r| +0&#ffffff0|m|i|s@1|i|n|g| |c|a|p| |h|e|r|e|.| 
@49
+ |N|o|t| @71
+ |a|n|d| |h|e|r|e>.| @65
+ |a+0&#5fd7ff255|n|d| +0&#ffffff0|h|e|r|e|.| @65
+ |~+0#4040ff13&| @73
+ |~| @73
+ | +0#0000000&@56|4|,|9| @10|A|l@1| 
*** ../vim-9.0.0607/src/version.c       2022-09-27 15:55:39.944808497 +0100
--- src/version.c       2022-09-27 16:03:53.390522410 +0100
***************
*** 701,702 ****
--- 701,704 ----
  {   /* Add new patch number below this line */
+ /**/
+     608,
  /**/

-- 
Some of the well known MS-Windows errors:
        EHUH            Unexpected error
        EUSER           User error, not our fault!
        EGOD            Horrible problem, god knows what has happened
        EERR            Errornous error: nothing wrong

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///                                                                      \\\
\\\        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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