Default button title "Use Settings" (capture, not print).
Cancel → nil (not Error).
PMRelease the PMPrinter on every path where it was created.
Forbidden: System Settings URL, CUPS web UI localhost:631, NSWorkspace open of the printer.
Rewrite invariants
#188 bind by CUPS Printer ID; main-thread only; never open System Settings.
Hardware: panel opens on Epson AND Canon with driver PDE visible.
Acceptance criteria
Cancel is not an error.
No leaks of PMPrinter (manual review of all paths).
## Summary
Preferences opens NSPrintPanel on the AppKit main thread, bound to the CUPS Printer ID.
## Spec refs
docs/11-print-macos.md. #188.
## Scope
In: panel binding, Use Settings, cancel=nil, PMRelease.
Out: ColorSync SPI (issue 14), lp spool (15).
## Implementation notes
1. Resolve display name OFF main thread (`lpoptions -p`).
2. Main thread: `PMPrinterCreateFromPrinterID(queueName)` — queue id, NOT display name.
3. `PMSessionSetCurrentPMPrinter` → `PMSessionDefaultPrintSettings` / `DefaultPageFormat`.
4. Fallback `NSPrinter(name: displayName)` + `setUpPrintOperationDefaultValues`.
5. Default button title "Use Settings" (capture, not print).
6. Cancel → `nil` (not Error).
7. `PMRelease` the PMPrinter on every path where it was created.
Forbidden: System Settings URL, CUPS web UI `localhost:631`, `NSWorkspace` open of the printer.
## Rewrite invariants
#188 bind by CUPS Printer ID; main-thread only; never open System Settings.
## Dependencies
Blocks-on: 12.
Unblocks: 14, 16.
## Test
- CI/mock: cancel path returns nil; missing queue errors cleanly.
- Hardware: panel opens on Epson AND Canon with driver PDE visible.
## Acceptance criteria
- [ ] Cancel is not an error.
- [ ] No leaks of PMPrinter (manual review of all paths).
gronod
added this to the M3 — macOS unmanaged printing (lp) milestone 2026-09-08 17:40:55 +01:00
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Summary
Preferences opens NSPrintPanel on the AppKit main thread, bound to the CUPS Printer ID.
Spec refs
docs/11-print-macos.md. #188.
Scope
In: panel binding, Use Settings, cancel=nil, PMRelease.
Out: ColorSync SPI (issue 14), lp spool (15).
Implementation notes
lpoptions -p).PMPrinterCreateFromPrinterID(queueName)— queue id, NOT display name.PMSessionSetCurrentPMPrinter→PMSessionDefaultPrintSettings/DefaultPageFormat.NSPrinter(name: displayName)+setUpPrintOperationDefaultValues.nil(not Error).PMReleasethe PMPrinter on every path where it was created.Forbidden: System Settings URL, CUPS web UI
localhost:631,NSWorkspaceopen of the printer.Rewrite invariants
#188 bind by CUPS Printer ID; main-thread only; never open System Settings.
Dependencies
Blocks-on: 12.
Unblocks: 14, 16.
Test
Acceptance criteria