David. As always - thank you for the quick turnaround!
But… Darn…
gmic update
cd git_repositories/gmic-community
git tag oldspace 'HEAD@{1 day ago}'
git branch --create OldSpace oldspace
git checkout OldSpace
cd tutorial/valuesmanip
gmic it orientation.gmd gmd2html 2 ot orientation.html
gmic update? check.
gmic it orientation.gmd gmd2html 2 ot orientation.html
[gmic]-0./ Start G'MIC interpreter.
[gmic]-0./ Input text-data file 'orientation.gmd'.
[gmic]-1./ Output image [0] as text-data file 'orientation.html'.
[gmic]-1./ End G'MIC interpreter.
And… I still get the bounce.
By any chance, you didn’t happen to test at the current HEAD? orientation.gmd and friends already had space characters taken out of the table this morning, EDT, and would not reflect the issue. To test, I kicked back a few commits (to a local OldSpace branch)
Markup looks like this (at OldSpace: be3064bc)
|| __Original__ | __Color Vectors__ | __Vector Lengths__ | __Factors__
|  |  |  | 
It looks like this, now, at HEAD on master 80d227f8
||__Original__|__Color Vectors__|__Vector Lengths__|__Factors__
||||
I.e., white space removed from the current version. It wouldn’t reflect the problem.