mtext adj= wrong with several las= (PR#7188)

Paul Murrell <p.murrell@auckland.ac.nz> writes:

I think the ideal would be to set padj automatically for multi-line
text as well as single-line text (the current behaviour tries to set
padj automatically for single-line text;  it's just not very good at
it :).
But whatever first step is good;  then we can more easily discuss
actual behaviour and code examples.

A somewhat uninformed conjecture: You'll need to look at the TeXbook
again. Think of it like this: A single line of text forms a box that
has a top, a bottom, and a baseline, and you can align on either or on
some fraction between top and bottom. Multiple lines form a box too,
but you need a way to specify whether the baseline of the entire box
is defined by the top or the bottom line inside of it. In addition,
you need to specify alignment inside the box. Basically, we need a
more structured approach than a bunch of options that change meaning
depending on the setting of other options.

O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907