Context: http://dlang.org/spec/grammar.html
The "Symbol" rule is used only by two other rules in the grammar,
"TemplateArgument" and "WithStatement".
In the case of "WithStatement", the grammar looks like this:
WithStatement:
'with' '(' Expression | Symbol | TemplateInstance ')'
ScopeStatement
Looking at the definition of the "Symbol" and "Expression" rules
you can see that anything that can parse as "Symbol" can also
parse as "Expression", so there's no point in this rule being
here.
In the case of "TemplateArgument", the grammar looks like this:
TemplateArgument:
Type | AssignExpression | Symbol
Again, reading the grammar for "Type" shows that it's a superset
of the grammar of "Symbol" so "Symbol" does not justify its
existence here either.
Am I missing something, or is this a good opportunity to simplify
the spec and make IDE plugin development easier?
