Every scan display names its phase and its place among the five, as
"[2/5] walk", with its progress, elapsed time and ETA. load counts the
records first; the walk estimates its total from the records under the
operands; the content phase adds up the sizes of the matching groups
and says it is searching until the first record returns. Each display
redraws every 100 ms on a terminal and every 5 seconds in plain mode.
On a terminal no line reaches the last column: a line too wide drops
its rate, then its bar. After the terminal is made narrower than the
widest line drawn, the display makes a new library object, whose erase
fits.
Judgement call: load and the content checks draw the bar too, once their totals are known.
Judgement call: the bar is 10 columns wide, not the width the line leaves.
Model: opus-5-5