antlr-options-style

antlr-options-style is a variable defined in `antlr-mode.el'.
Its value is

nil

Documentation:
List of symbols which determine the style of option values.
If a style symbol is present, the corresponding option value is put into
quotes, i.e., represented as a string, otherwise it is represented as an
identifier.

The only style symbol used in the default value of `antlr-options-alist'
is `language-as-string'. See also `antlr-read-value'.

You can customize this variable.