Re: Determining what parameters exist for an item

[David Kastrup]

Simon Albrecht <address@hidden> writes:

> On 25.01.2016 00:55, David Nalesnik wrote:
>>
>> \offset only works on properties that have a default value listed in
>> the grob pages in the IR (derived from the alist in
>> scm/define-grobs.scm).  There is no default value listed for
>> KeyCancellation.X-extent, hence the warning.
>
> Well, the point was that exactly for this case it would be great to
> tell lily ‘Increase this property by two, no matter what it previously
> was’,

Does anything even look at the grob property here?

> e.g. ‘Offset KeyCancellation’s X-extent by #'(0 . 2) (so it will have
> two units whitespace at the right), regardless of how wide it would
> normally be’. That would be a very powerful use case for \offset, if
> also the technical limitations might be non-trivial.

Any reason you can't use extra-spacing-width here?

-- 
David Kastrup