Support generating multi msg transaction with gnokey

[r3v4s]

Description

gno itself supports handling multi message transaction (for example, block 34248 has 1 transaction with 4 messages)

Based on default FULL SECURITY WITH AIRGAP guide, second step which generate unsigned.tx using gnokey maketx seems to be doesn't support multi message.

Of course, user can manually edit unsigned.tx with multiple messages and sign -> broadcast does work. But I think it should be better for UX if maketx support it directly.

[harry-hov]

I didn't get the context in terms of UX. But since we already have the means to generate unsigned txs. I can think of 2 options here:

• Option 1: We can simply append multiple txs to unsigned.tx. Something like

  gnokey maketx ... >> unsigned.tx
  gnokey maketx ... >> unsigned.tx
  gnokey maketx ... >> unsigned.tx

  And sign it

  gnokey sign unsigned.tx ... > signed.tx

• Option 2: Support signing multiple tx files.

  gnokey sign unsigned1.tx unsigned2.tx unsigned3.tx ... > signed.tx

[r3v4s]

Terms I used for UX was.. it would be better if user can generate & sign multiple message transaction in one shot(single command)

Option 1 looks better for me

[harry-hov]

What about supporting both options?

gnokey sign multiple-unsigned.tx unsigned1.tx unsigned2.tx ... > combined-signed.tx

[r3v4s]

What about supporting both options?

gnokey sign multiple-unsigned.tx unsigned1.tx unsigned2.tx ... > combined-signed.tx

Perfect, can't be better :D

Just let you know, I personally prefer Option 1 since it doesn't have to create bunch of unsigned1.tx, unsigned2.tx, ....