Indigo accepts [#6] notation in SMILES mode.

[AliaksandrDziarkach]

Steps to reproduce

Call convert function for the following SMARTS

[#6]-C

Actual result
Indigo load it as both #6 carbons
original_format=chemical/x-daylight-smiles

Expected result
second carbon should be aliphatic

original_format should be smarts

Technical details

Try to load SMARTS in SMILES mode using next code

#!/bin/env python3
import os
import sys

sys.path.append(
    os.path.normpath(
        os.path.join(os.path.abspath(__file__), "..", "..", "..", "common")
    )
)
from env_indigo import *

indigo = Indigo()

indigo.loadQueryMolecule("[#6][#7][#8]")

Got no error which is wrong - [#6] - SMARTS specific notation.