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

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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

1af35631f8

Only port eval.txt changes.

Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
This commit is contained in:
zeertzjq 2024-02-08 08:07:51 +08:00
parent 70a0049296
commit d75022d205
1 changed files with 12 additions and 0 deletions
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12
runtime/doc/eval.txt
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@ -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'