> If you put a bar over a string of As, the length of the bar increases
> by the same amount for every A you add, but that amount is not the
> length of a bar over a lone A.
> This nonuniformity is unfortunate.
This appears to be by design. The manual page says:
accent_width When bar or under is applied to a single
character, the line will be this long.
Normally, bar or under produces a line
whose length is the width of the object
to which it applies; in the case of a
single character, this tends to produce
a line that looks too long.
