ETTerms/docs/release-notes/v0.7.1.md

v0.7.1 — Scripts stop losing commands to a booting device

✨ New features

sendlnretry — send a command, confirm it ran, resend if it didn't

• New TTL command: sendlnretry '<text>' '<confirm keyword>' [max attempts]. It sends the text, then waits for proof the device actually ran it, and resends if that proof never arrives. Leave the attempt count out and it retries until it gets through.

• Drop it in wherever you send a command right after a boot — the fragile pause + sendln + wait dance becomes one line:

  wait 'root@(none):/#'
  sendlnretry 'tpm2' 'TPM 2p0'      ; retry until the device really runs it
  wait 'PASS'
  

• Cap the attempts and handle the failure yourself — on success result is 1; when the attempts run out result is 0 and the script carries on instead of dying:

  sendlnretry 'tpm2' 'TPM 2p0' 3
  if result = 0 then
      dispstr 'tpm2 got no response after 3 tries'
  endif
  

• Pick the confirm keyword from the command's own output (TPM 2p0), not its echo (tpm2) — an echo is produced by the device's tty and doesn't prove the shell ever read the line.

• Each attempt waits 3 seconds by default, or your timeout / mtimeout if you've set one. (Unlike wait, 0 doesn't mean "wait forever" here — that would mean never retrying.)

🐛 Bug fixes

Scripts no longer hang forever when a booting device swallows a command

• Fixed: a device that is still booting can silently discard console input the moment its shell takes over the tty. The line you sent is gone — the device never echoes it and never runs it — so the wait that follows blocks forever and the test rig sits dead until someone notices.
• This is a race, not a delay: adding pause before sendln only lowers the odds of hitting the window, it can never close it. In one overnight 45-cycle power-cycle run, 3 cycles hung this way — and the swallowed sends landed at exactly the same moment as the 42 that worked.
• Use the new sendlnretry above to make these sends reliable.

📦 Downloads

Two builds are produced:

Build	Needs .NET 8 Desktop Runtime?	Notes
Standard (ETTerms_v0.7.1)	✅ Yes	Smaller; for machines that already have the runtime
Portable (ETTerms_v0.7.1_portable)	❌ No	Runtime bundled — unzip and run, no install / admin needed

Run ETTerms v0.7.1.exe.

🔗 Links

• TTL reference (see 送出並確認 / sendlnretry): docs/ttl-script-reference.md
• Architecture: ARCHITECTURE.md

Full changelog: v0.7.0...v0.7.1