CHANGELOG.md

Unreleased

• Add hex! macro for const hex literal parsing.
• Bump the MSRV

1.0.1 - 2025-12-02

• Remove doc_auto_cfg

1.0.0 - 2025-07-11

• Removed niche reexports from root
• Various documentation improvements
• A few test improvements

1.0.0 release candidate 2 -- 2025-06-27

• Removed iterator API that got published by accident

1.0.0 release candidate 1 -- 2025-05-16

• Exports decode_to_array, decode_to_vec, and all error types.

The goal of this release is to enable library authors to use hex-conservative, exposing error types from this library in their own APIs, and not need to worry that they will face API breakage because of this.

Future minor releases will add encoding support and a more expansive set of traits.

0.3.0 - 2024-09-18

• Re-implement HexWriter #113
• Fix Display width and precision of DisplayByteSlice #114
• Encoding performance improvements #117
• Relax bounds of BytesToHexIter #118
• Add case to BytesToHexIter #120
• Encapsulate unsafe code inside the table module #121
• Fix HexToBytesIter::size_hint #122
• Restrict BufEncoder to uniform case encoding #119
• Remove the core2 dependency #105
• Introduce more serde utilities #92
• Add impl_fmt_traits macro #90
• Enable serialization of byte slices #96
• Bump MSRV to Rust 1.63.0 #102
• Store position of invalid char in InvalidCharError #107
• Only encode the bytes formatted in the hex string #108

0.2.1 - 2024-05-17

• Add a new impl_fmt_traits macro that can be used to implement fmt::{LowerHex, UpperHex, Display, Debug} #90

0.2.0 - 2024-02-27

Breaking changes

There are a bunch of breaking changes in this release, including:

• Re-write the FromHex trait #80
• Revamp BufEncoder #52
• A bunch of public errors have changed.

Other improvements

• Bump MSRV to 1.56.1
• For improved ergonomics, add a prelude module #36
• Add a serde module #37
• Remove arbitrary padding limit #41
• Make fmt_hex_exact honour Formatter::precision#81

Improve error handling

• Update the derives on error types #31
• Hide error internal #44
• Return specific error from HexToByesIter::new #62

0.1.2 - 2024-05-14

• Fix bug in output of InvalidError #88.

0.1.1 - 2023-07-19

• Add test_hex_unwrap hex parsing macro for test usage.
• Improve formatting hex for bytes slices e.g., support padding.

0.1.0 - 2023-06-20 Initial Release

• Import code from the bitcoin_hashes and bitcoin-internals crates.
• Add Iterator implementations