[antlr-interest] error in tree grammar - regd.

[ASHOK REDDY]

Hello,

I am trying to debug the following tree grammar when I antlr complained with
the following message:-

Message in the console:-

[21:44:50] Checking Grammar...
[21:44:50] error(10):  internal error:
org.antlr.tool.Message.toString(Message.java:124): Assertion failed! Message
ID 138 created but is not present in errorMsgIDs or warningMsgIDs.

Message in the pop-up window:

(138): DOTTREE.g:0:0: grammar DOTTREE: no start rule (no rule can obviously
be followed by EOF)

Attached in the tree grammar file.
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