console: multiline input fails in some cases

[Totktonada]

Tarantool 2.1.1-416-gbe7d940f5.

There are cases where loadstring + syntax error checks fails to provide a multiline input:

tarantool> function(
---
- error: '[string "function("]:1: ''<name>'' expected near ''('''
...

tarantool> function()
---
- error: '[string "function()"]:1: ''<name>'' expected near ''('''
...

However:

tarantool> return function(
         > ) end
---
- 'function: 0x40bb1770'
...

tarantool> return function()
         > end
---
- 'function: 0x40bb22c0'
...

It seems we need to check for ''<name>'' expected near ''(''' too, but don't sure.

See also b27871a.

[Totktonada]

One more:

localhost:3311> y = function x()
---
- error: '[string "y = function x()"]:1: ''('' expected near ''x'''
...

[Totktonada]

More:

tarantool> function() return
---
- error: '[string "function() return"]:1: ''<name>'' expected near ''('''
...