Hello,

got this new error today when trying to install a package with M-x
list-packages.

When I revert this commit:

  7e32e8392ab "Fix recent test regressions"
  (Stefan Monnier <monnier@iro.umontreal.ca> 2024-03-22)

the problem disappears.  This commit causes a destruction of my custom
file when it gets pp-filled, by adding newlines into #N# syntaxes, like
#1# => #1\n#.

Attached is a test file.  If you (pp-fill (point-min) (point-max))
you will see this effect happen near the end of that file.


TIA,

Michael.