commands/record: amend current change if unspecified

Dependencies

• [2] 4H2XTVJ2 Fix some mistakes in the docs
• [3] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [4] I52XSRUH Massive cleanup, and simplification
• [5] SEWGHUHQ .pijul/config: simplify remotes and hooks
• [6] AEPEFS7O Write help for each argument

Change contents

• replacement in pijul/src/commands/record.rs at line 44
  [3.102694]→[3.102694:102725](∅→∅)
  − pub amend: Option<String>,
  [3.102694]

  [2.910]
  + #[allow(clippy::option_option)]

  + pub amend: Option<Option<String>>,
• replacement in pijul/src/commands/record.rs at line 73
  [3.103811]→[3.103811:103866](∅→∅)
  − let (h, _) = txn.hash_from_prefix(amend)?;
  [3.103811]

  [3.103866]
  + let h = if let Some(ref hash) = amend {

  + txn.hash_from_prefix(hash)?.0

  + } else if let Some((_, (h, _))) = txn.reverse_log(&channel.borrow(), None).next() {

  + h

  + } else {

  + return Ok(());

  + };