neovim

commit d75022d2059b660782ff2d68b2dd58916e603c95
parent 70a00492962d3201603056d00fbf87c785106d0d
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Thu,  8 Feb 2024 08:07:51 +0800

vim-patch:partial:9.1.0080: unexpected error for modifying final list using +=

Problem:  unexpected error for modifying final list using += operator
          (Ernie Rael)
Solution: Allow List value modification of a final variable using +=
          operator
          (Yegappan Lakshmanan)

fixes: vim/vim#13745
fixes: vim/vim#13959
closes: vim/vim#13962

https://github.com/vim/vim/commit/1af35631f85d2fcdc83c5d457af8273697f5146a

Only port eval.txt changes.

Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

Diffstat:
M
runtime/doc/eval.txt
 | 
12
++++++++++++

1 file changed, 12 insertions(+), 0 deletions(-)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
@@ -374,6 +374,18 @@ To change part of a list you can specify the first and last item to be
 modified.  The value must at least have the number of items in the range: >
 	:let list[3:5] = [3, 4, 5]
 
+To add items to a List in-place, you can use the |+=| operator: >
+	:let listA = [1, 2]
+	:let listA += [3, 4]
+<
+When two variables refer to the same List, changing one List in-place will
+cause the referenced List to be changed in-place: >
+	:let listA = [1, 2]
+	:let listB = listA
+	:let listB += [3, 4]
+	:echo listA
+	[1, 2, 3, 4]
+<
 Adding and removing items from a list is done with functions.  Here are a few
 examples: >
 	:call insert(list, 'a')		" prepend item 'a'