detour - grammarware/slps GitHub Wiki
A reverse of abridge that can introduce a reflexive chain production.
detour:
production
In the same way it was removed in the example for abridge, the bracketing production can be added to the grammar. The transformation that reverts the impact of the previous abridge, looks like this:
detour(
[bracket] expr:
expr
);
- Detour is a part of XBGF