To: vim_dev@googlegroups.com
Subject: Patch 8.2.5123
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 8.2.5123
Problem:    Using invalid index when looking for spell suggestions.
Solution:   Do not decrement the index when it is zero.
Files:      src/spellsuggest.c, src/testdir/test_spell.vim


*** ../vim-8.2.5122/src/spellsuggest.c	2022-05-23 12:01:10.937519982 +0100
--- src/spellsuggest.c	2022-06-18 14:06:36.400730777 +0100
***************
*** 1973,1979 ****
  			    sp->ts_isdiff = (newscore != 0)
  						       ? DIFF_YES : DIFF_NONE;
  			}
! 			else if (sp->ts_isdiff == DIFF_INSERT)
  			    // When inserting trail bytes don't advance in the
  			    // bad word.
  			    --sp->ts_fidx;
--- 1973,1980 ----
  			    sp->ts_isdiff = (newscore != 0)
  						       ? DIFF_YES : DIFF_NONE;
  			}
! 			else if (sp->ts_isdiff == DIFF_INSERT
! 							    && sp->ts_fidx > 0)
  			    // When inserting trail bytes don't advance in the
  			    // bad word.
  			    --sp->ts_fidx;
*** ../vim-8.2.5122/src/testdir/test_spell.vim	2022-06-15 16:57:39.974855160 +0100
--- src/testdir/test_spell.vim	2022-06-18 14:05:09.768708175 +0100
***************
*** 70,75 ****
--- 70,85 ----
    bwipe!
  endfunc
  
+ func Test_z_equal_on_single_character()
+   " this was decrementing the index below zero
+   new
+   norm a0\Ê
+   norm zW
+   norm z=
+ 
+   bwipe!
+ endfunc
+ 
  " Test spellbadword() with argument
  func Test_spellbadword()
    set spell
*** ../vim-8.2.5122/src/version.c	2022-06-18 12:51:08.146916429 +0100
--- src/version.c	2022-06-18 14:08:35.096088475 +0100
***************
*** 736,737 ****
--- 736,739 ----
  {   /* Add new patch number below this line */
+ /**/
+     5123,
  /**/

-- 
CART DRIVER: Bring out your dead!
   We follow the cart through a wretched, impoverished plague-ridden village.
   A few starved mongrels run about in the mud scavenging.  In the open
   doorway of one house perhaps we jug glimpse a pair of legs dangling from
   the ceiling.  In another doorway an OLD WOMAN is beating a cat against a
   wall rather like one does with a mat.  The cart passes round a dead donkey
   or cow in the mud.  And a MAN tied to a cart is being hammered to death by
   four NUNS with huge mallets.
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///                                                                      \\\
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 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///