Re: AW: Macro's for making an exam.

[Oliver Corff]

Hi Keith,

thank you for the correction.

I apologize for the erroneous information I offered. I clearly confused
that with the use of requests within tbl cells; they must be positioned
at the beginning of the line.

Please accept my apologies.

Best regards,

Oliver.


On 10/06/2021 00:28, Keith Marshall wrote:
> On 09/06/2021 19:35, Oliver Corff wrote:
> > All .dot requests MUST be at the beginning of the line; in your code
> > example, the dot is not recognized.
> No, that is not so.  The issue with Hans' example, (apart from the under
> escaping of register references within his macro definitions, as Peter
> has already noted), is that he is not specifying the appropriate end
> marker for his .ig request.  Since the effect of his SOLUTION macro ends
> with a following SOLEND macro rather than:
>
> > .de SOLUTION
> > .if (\n[s] == 0) .ig ++
> > .br
> > ..
> > .de SOLEND
> > .++
> > ..
> he should have:
>
>     .de SOLUTION
>     .   if (\\n[s] == 0) .ig SOLEND
>     .   br
>     ..
>     .de ENDSOL
>     .   \" Any clean-up required, at end of solution.
>     ..
>
> This toy example does, for me, what I believe Hans is trying to achieve:
>
>     $ cat foo.roff
>     .pl 10
>     .in 5m
>     .nr QNR 0 1
>     .de QUESTION
>     .   br
>     .   ti -5m
>     .   nop \Z'Q\\n+[QNR].'\h'5m'\c
>     ..
>     .de SOLUTION
>     .   ie '\\$1'' .ds SOLHT 3v
>     .   el .ds SOLHT \\$1
>     .   el '
>     .   if !\\n[SOLUTIONS] .ig SOLEND
>     .   br
>     .   ti -5m
>     .   nop \Z'A.'\h'5m'\c
>     ..
>     .de SOLEND
>     .   \" Insert any required code here,
>     .   \" to adjust state after a solution;
>     .   \" (e.g. to insert blank space,
>     .   \" when solutions are hidden).
>     .   ie \\n[SOLUTIONS] .sp
>     .   el .sp \\*[SOLHT]
>     ..
>     .QUESTION
>     Solutions are not normally shown.
>     How can they be made visible?
>     .SOLUTION 5v
>     Run the formatter,
>     specifying the "-rSOLUTIONS=1" register assignment,
>     on the command line.
>     .SOLEND
>     .
>     .in 0
>     .pl 1
>     Here is some arbitrary text, following the Q&A section.
>
>     $ nroff foo.roff
>     Q1.  Solutions  are  not  normally  shown.   How can they be made
>          visible?
>
>
>
>
>     Here is some arbitrary text, following the Q&A section.
>
>     $ nroff -rSOLUTIONS=1 foo.roff
>     Q1.  Solutions  are  not  normally  shown.   How can they be made
>          visible?
>     A.   Run the formatter, specifying the  "‐rSOLUTIONS=1"  register
>          assignment, on the command line.
>
>     Here is some arbitrary text, following the Q&A section.