left margin difference between `\markup` and `\table`

[Werner LEMBERG]

Consider the following example.

```
\paper {
  left-margin = 0
}

\markup \rounded-box { foo }

\markuplist \table #'(-1) {
  \rounded-box { foo }
}
```

Why is there a difference in the formatting?  I would like to have the
same behaviour – ideally, `\markup` should also take the rounded box
into account while computing the horizontal extent.


    Werner