> Finally I got a `problems' file. The suicidal trap seems to work
> like this:
[...] I have to apologize for pointing you to an overly complex
example. Normally it isn't necessary at all to rename `.wh'. Here a
simple example:
.de kamikaze-trap
. wh \\n[nl]
. nop We are in a kamikaze trap!
..
.
.wh 5i kamikaze-trap
> It seems that yes, wh_saved can invoke the macro in question, but it
> seems that saving/restoring wh does not eliminate the trap, .ptr
> still shows it.
>From groff.info:
-- Request: .ptr
Print the names and positions of all traps (not including input
line traps and diversion traps) on `stderr'. Empty slots in the
page trap list are printed as well, because they can affect the
priority of subsequently planted traps.
Renaming .wh doesn't influence the list of traps -- the macro has just
a different name.
> Btw, wouldn't it be less work to introduce a kamikaze trap into
> groff than working with such constructs at document level many times
> over? What do you think?
I think the above example is simple enough -- you need a single line
to remove the trap which is currently executed.
Werner
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