Problem seen with another example code in vim9.txt

[Yegappan Lakshmanan]

Hi,

I see a problem with another example code in vim9.txt:

-----------------------------------------------------------------------
command -range Rename {
var save = @a
@a = 'some expression'
echo 'do something with ' .. @a
@a = save
}
-----------------------------------------------------------------------

After sourcing the above code, If I invoke the "Rename"
command more than once, I see the "E1041: Redefining
script item save" error:

- Yegappan

[Bram Moolenaar]

Interestingly, this only happens using a legacy script.
Putting "vim9script" above it avoids the problem.

This must be because in Vim9 script variables are kept local to a block.
In legacy script a variable declared in a block can be used after that
block. On the other hand, the {} block is Vim9 script, thus it's like
the variable is not really defined at the script level.

I think this needs to be fixed, the example should work.

--
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acid-mines for my daily crust of stale bread... which not even the
birds would eat.

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