line comment in query made qtag not recognized.

[jinfengni]

Using c style comment, qtag works fine.

cat ~/tmp/q3.sql
select *
from CATALOG_SALES CS
JOIN CUSTOMER C ON (CS.CS_BILL_CUSTOMER_SK = C.C_CUSTOMER_SK)
/* This is comment */
;
-- qtag:references {"table:DIMENSION":true}

cat ~/tmp/q3.sql |qtag
[
  {
    "Source": "references",
    "Key": "table",
    "Value": true,
    "Type": "DIMENSION"
  }
]

Using line comment, qtag is not recognized:

cat ~/tmp/q4.sql
select *
from CATALOG_SALES CS
JOIN CUSTOMER C ON (CS.CS_BILL_CUSTOMER_SK = C.C_CUSTOMER_SK)
-- This is comment
;
-- qtag:references {"table:DIMENSION":true}

cat ~/tmp/q4.sql |qtag
null

Add --all will get qtag, but the line comment mess up with the source name.

cat ~/tmp/q4.sql |qtag --all
[
  {
    "Source": "This is comment\n;\n-- qtag:references",
    "Key": "table:DIMENSION",
    "Value": true,
    "Type": "UNKNOWN"
  }
]