--help and -h used to be taken for a file to open: from a terminal, SSH or an
agent's shell the window opened, or the start hung or failed without a display.
They now print the desktop app's options and point to vectorcraft-cli for
headless work, exiting before logging, preferences or the window, as
--version does.
--control took the next argument as its port and dropped it when it wasn't a number, so the app
started without a control server and `--control --automation-read-root DIR` opened DIR as a
document. automation_args::ControlArg now reads --control <port> or --control=<port> once and
requires a port from 1 to 65535; VECTORCRAFT_CONTROL_PORT must be one too, checked only when
--control isn't given so --control and --version win over a bad value. Errors go through the
same exit as the root flags (#1157).
Tests: unit tests in automation_args.rs; tests/automation_args.rs runs the binary for each bad
form and checks the exact message and a prompt failing exit.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Gert Pellin