[~] is MSI's escape for a NUL character, not the delimiter WcaReadStringFromCaData
splits on -- that is a literal wide char 128, which a Formatted property value
cannot carry -- and WcaGetProperty returns a null-terminated string anyway. So
the second field was unreachable: InstallPrinter always fell back to the stock
name and installed a printer and port called "RustDesk Printer" inside a
customer's branded package, while UninstallPrinter, whose data is a single field
and parsed fine, went looking for "Acme Printer" and left the real one behind
for good.
Both actions now read CustomActionData directly and split on a character that
cannot occur in a Windows path or in a validated app name. A package built
before this carries no separator and keeps the stock name, as it did.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Q7fBdTwziR5BHTkSz7Tzcm
9dae15e523
