Re: [Groff] proposal: add variable traps to groff.

[Werner LEMBERG]

> This is a proposal for a new kind of trap to be added to the groff
> engine.  Maybe someone with more insight than me could comment on
> this.
>
> A variable trap that triggers whenever a variable (register and
> string, maybe even diversion, environment, macro) is accessed, i.e.
> created, deleted, changed, read.  The trap macro gets a description
> of the variable (register or string) and of the access (action with
> data).  The trap macro can modify the result of the action and can
> have additional side effects. [...]

It's not really clear to me what you want to do with that interface.
Are you interested in better debugging facilities?  Or do you have
something different in mind?


     Werner