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Merge pull request #27379 from zeertzjq/vim-9.1.0080

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vim-patch:partial:9.1.0080,c9c2e2d2ff44
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runtime/doc/eval.txt
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@ -252,7 +252,9 @@ List concatenation ~
*list-concatenation*
Two lists can be concatenated with the "+" operator: >
:let longlist = mylist + [5, 6]
A list can be concatenated with another one in place using the "+=" operator or |extend()|: >
:let mylist += [7, 8]
:call extend(mylist, [7, 8])
To prepend or append an item, turn the item into a list by putting [] around
it. To change a list in-place, refer to |list-modification| below.
@ -374,6 +376,19 @@ 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
|list-concatenation|: >
: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'