Glyphs placed one by one with even gaps could be letters set apart or
words of one letter each, and a file's positions can't tell them apart.
The spacing a line's letters share is now taken off its gaps only when
the line also shows where its words break: with spaces it draws (as
with Tc), or with gaps wider than the rest (tracked words placed glyph
by glyph). Otherwise every gap past a fifth of an em is a space, as
before, so A, B, C and D placed with ordinary word spaces between them
still come in as "A B C D".
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
