Older versions' copy and paste could leave two symbols with the same
uuid. Wires, links and the project database name a symbol by its uuid,
so a copy was ambiguous: #1417 worked around it for wires, but the
project database keeps one row per uuid, and a link to the uuid could
mean either copy.
When a project opens, every symbol carrying a uuid another symbol also
carries gets a uuid of its own, derived from the shared one and its
folio's uuid, so the same file gives the same result on every open. The
copy that keeps the shared uuid is the first one linked to another
symbol (its partner's link names that uuid), else the first. It is done
once the folio's wires are connected, so #1417's choice of which copy a
wire meets is kept. Folios holding such a copy are built when the
project opens, also with lazy folios.
Only files with shared uuids change, once: 3 of the 341 corpus projects.
tst_sharedsymboluuid: the lamps given one uuid now come back with three;
a linked contact and an unlinked symbol sharing its uuid keep every link
and wire, the linked one keeping the uuid. Both fail without the fix.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XCdg2Er2vYhB8Vwa5G7fSR
Symbols copied in old versions can share one uuid on a folio. Up to
0.100 that was harmless: a wire on a terminal without uuid was saved by
terminal number. Since #1118 every terminal has a uuid, so every wire was
saved by symbol uuid and terminal uuid, and on reopening findTerminal()
took the first symbol carrying it: all the copies' wires landed on it.
- Save: a wire end on a symbol whose uuid another symbol of the folio
also carries is written by terminal number again.
- Load: when a wire's uuid names several symbols, pickEnds() takes the
pair whose distance matches the wire's saved path, then the symbols
whose labels match the ones saved with the wire, then two terminals no
wire joins yet; otherwise the first, as before. This repairs a file a
build with #1118 saved once.
tst_sharedsymboluuid gives the three lamps of
Habitat-Schemas_developpes.qet one uuid: master loses a net after a
save (8 of 9) and reopens the file it saved with 8; with this, 9 both
times. The 25 examples save the same as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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