Add negative anchors/anchor negation

[brxck]

It would be useful to specify whether commands shouldn't begin or end a group.

If I had a repeat command:

<number>: core.repeat_command(number-1)

I would like the command to only activate after another command.

"dot five" - .....
"five" or "five dot" - should not trigger

[lunixbochs]

I understand the need, but my hesitation around this, is it changes Talon from 4 command groups with 7 paths between them, to 9 command groups with 31 paths between them. I think it may have a pretty bad effect on grammar complexity and performance :(

[brxck]

May not be worth it considering I haven't run into a need for this since! After a bugfix in talon a while back this example can be handled with two rules:

^<number>: skip ()
​<number>: core.repeat_command(number-1)

[lunixbochs]

I'm not going to do this anytime soon due to the grammar complexity, closing.