Here are notes on a medium-sized commit by jrose to clean up groovy.g and associated files.

Affected source files:

• groovy.g, rev 1.17: http://cvs.groovy.codehaus.org/viewrep/groovy/groovy/groovy-core/src/main/org/codehaus/groovy/antlr/groovy.g
• plugin, rev 1.18: http://cvs.groovy.codehaus.org/viewrep/groovy/groovy/groovy-core/src/main/org/codehaus/groovy/antlr/AntlrParserPlugin.java
• Isolated token changes in a couple of test files (x..<y range syntax).

Functional changes

• Allow newline before LBRACE uniformly. Use nlsWarn in all such cases.
• Factor T[] syntax into declaratorBrackets rule.
• Make new and METHOD_CALL expressions have common structure.
• Add grammar for proposed "$*x" GString syntax.
• Right-exclusive ranges are spelled x..<y (x...y temporarily backward-compatible).
• Fix bug in #! comment syntax.
• Clarify keywords in argList rule. Allow '[:' only in grammar notes.

Name changes

• SPREAD_ARG => SPREAD_DOT (for *. nodes)
• OPTIONAL_ARG => OPTIONAL_DOT (for ?. nodes)
• METHOD_POINTER => MEMBER_POINTER (for .& nodes)

Cleanups

• Remove transitional hack arrayOrTypeArgs.
• Clean up and simplify pathExpression and commandStatement rules.
• Add some more javadoc.
• Remove annoying zz= decorations on argList, etc.
• Remove useless rules for expressionBlock, assignmentTail, assignmentOp.
• Factor statement label syntax into statementLabelPrefix.
• Remove some useless 'greedy' declarations.