Vim9: Unexpected error message when using multiple lines with extend()

[Yegappan Lakshmanan]

Hi,

When I source the following Vim9 script:

--------------------------------------------------------------------------------------
vim9script

def Test()
var a: dict<any> = {b: {}}
a.b->extend({f1: 1,
f2: 2})
enddef
v:errmsg = ''
Test()
echo v:errmsg
--------------------------------------------------------------------------------------

I get the "E116: Invalid arguments for function extend({f1: 1," error.
If I pass the arguments to extend() in a single line, then it works
without this error. Is this expected?

Interestingly, this error doesn't abort the function and the error
message is not displayed automatically. It is only set in the
v:errmsg variable.

- Yegappan

[Bram Moolenaar]

This happens when compiling the function, if you replace "Test()" with
"defcompile" you also get the error.

It happens when skipping over the expression, which happens without
evaluating, but that isn't checked at this point.

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