If I understand it correctly then the problem you have is that 'LINE' and 'TTL' are not passed through the if condition or in short lines 'The tag is LINE' and 'The tag is TTL' are not printed. If that is true than revisit your condition '/^\{(.*)\}$/' it says that the line should start with '{' and end with '}' which is not the case therefore the condition fails. To solve it try following instead of 'if'

while(/{(.*?)}/g) {
[download]

Here is the output you get.

The tag is SOURCETAG
The tag is DATE
The tag is EDITION
The tag is HEADLINE
The tag is SOURCE
The tag is LINE
The tag is TTL
[download]

Update: whoops my suggestion looks like a copy of Crackers2 :)