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-rw-r--r--src/nvim/spell.c5
-rw-r--r--src/nvim/testdir/test_spell.vim12
2 files changed, 15 insertions, 2 deletions
diff --git a/src/nvim/spell.c b/src/nvim/spell.c
index 0fedd27037..2aadc2258e 100644
--- a/src/nvim/spell.c
+++ b/src/nvim/spell.c
@@ -7023,8 +7023,9 @@ void spell_dump_compl(char_u *pat, int ic, Direction *dir, int dumpflags_arg)
n = arridx[depth] + curi[depth];
++curi[depth];
c = byts[n];
- if (c == 0) {
- // End of word, deal with the word.
+ if (c == 0 || depth >= MAXWLEN - 1) {
+ // End of word or reached maximum length, deal with the
+ // word.
// Don't use keep-case words in the fold-case tree,
// they will appear in the keep-case tree.
// Only use the word when the region matches.
diff --git a/src/nvim/testdir/test_spell.vim b/src/nvim/testdir/test_spell.vim
index 1db0a01bd8..5099818384 100644
--- a/src/nvim/testdir/test_spell.vim
+++ b/src/nvim/testdir/test_spell.vim
@@ -287,6 +287,18 @@ func Test_spellreall()
bwipe!
endfunc
+func Test_spell_dump_word_length()
+ " this was running over MAXWLEN
+ new
+ noremap 0 0a0zW0000000
+ sil! norm 0z=0
+ sil norm 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+ sil! norm 0z=0
+
+ bwipe!
+ nunmap 0
+endfunc
+
" Test spellsuggest({word} [, {max} [, {capital}]])
func Test_spellsuggest()
" Verify suggestions are given even when spell checking is not enabled.