fix regression that broke string.format with list objects

String formatting should validly assume that printing a list means
printing the list itself. Instead, something like this broke:

'one is: @0@ and two is: @1@'.format(['foo',  'bar'], ['baz'])

which would evaluate as:

'one is: foo and two is: bar'

or:

'the value of array option foobar is: @0@'.format(get_option('foobar'))

which should evaluate with '-Dfoobar=[]' as

'the value of array option foobar is: []'

But instead produced:

meson.build:7:0: ERROR: Format placeholder @0@ out of range.

Fixes #9530

0 files changed, 0 insertions, 0 deletions