changelog.org

Changelog

All notable changes to this project will be documented in this file.

[0.6.0] - 2026-04-06

Added

• -s / --socket-name flag and EMACS_SOCKET_NAME env var for connecting to a named Emacs daemon socket (#1)
• Persistent TCP socket transport between mxp and Emacs
• Auto-bootstrapping: mxp starts a lightweight eval server inside Emacs on first use (no manual M-x required)
• All communication goes over a single persistent connection per invocation via bash’s /dev/tcp
• Transparent fallback to emacsclient when socket is unavailable
• MXP_PORT env var for custom server port (default: 17394)
• MXP_NO_SOCKET env var to force emacsclient-only mode
• Socket transport test suite

Changed

• Streaming now sends all chunks sequentially over one socket - guaranteed ordering, no race conditions
• open_mode uses emacsclient -n directly (avoids interactive prompts from process filter context)

Removed

• Background job concurrency limiter (jobs -r / sleep 0.01 spin-wait) - no longer needed with persistent connection
• Sync/async flush split - all flushes are now uniform
• wait at end of write_mode - no background jobs to collect

[0.5.3] - 2025-10-29

• Correctly handles emojis and other utf-8 chars

[0.5.2] - 2025-10-27

• Additional hooks

[0.5.1] - 2025-10-27

• Fixed streaming with timeout-based flushing

[0.5.0] - 2025-01-25

Changed

• BREAKING: Removed pass-through behavior - piping now works like standard Unix pipes
• Content piped to Emacs no longer echoes to stdout (previously behaved like tee)
• This makes mxp behave consistently with normal piping conventions

Fixed

• Fixed “Connection refused” errors when streaming large amounts of data
• Implemented concurrent job limiting (max 5 background processes) to prevent overwhelming Emacs server
• Streaming now maintains real-time updates while avoiding connection overload

Removed

• Pass-through/tee-like behavior removed from write mode

[0.4.0] - 2025-01-25

Added

• Open mode: Open files and directories directly in Emacs with mxp file.txt or mxp .
• Smart detection automatically distinguishes file paths from buffer names
• is_path() function for detecting file/directory arguments
• Support for opening directories in dired
• Support for ~, ~/, and relative path patterns

Changed

• Mode detection now checks if argument is a file path before treating as buffer name
• Enhanced help text with file/directory opening examples
• Added smart detection notes to help and README

Fixed

• Reading buffers with multibyte/Unicode characters (e.g., *Messages*) now works correctly
• Fixed large buffer reading by using temporary files instead of base64 encoding
• Removed emacsclient --eval output size limitations (previously failed on buffers >1MB)
• Significantly improved performance for large buffers (10MB buffer: ~0.12s vs previous timeout)

[0.3.0] - 2025-01-25

Added

• Prepend mode (--prepend, -p) to insert content at the beginning of buffers
• Self-update functionality (--update) to upgrade mxp from GitHub
• Validation to prevent using both --append and --prepend together
• Symlink resolution in self-update to handle aliased/linked installations
• Automatic backup creation during updates (.backup file)

Changed

• Table of contents added to README.org

[0.2.0] - 2025-01-25

Changed

• Renamed project from mx-piper to mxp for brevity
• Updated hook variable from mx-piper-buffer-hook to mxp-buffer-hook
• Updated all documentation and examples to reflect new name

[0.1.0] - 2025-01-24

Added

• Initial release
• Write mode: pipe stdin to Emacs buffers
• Read mode: output buffer content to stdout
• Auto-generated buffer names (*Piper 1*, *Piper 2*, etc.)
• Buffer matching via regex patterns
• Append mode (--append, -a)
• Force overwrite mode (--force, -F)
• Streaming support with chunked processing
• Conflict resolution for duplicate buffer names
• Emacs hook support for custom buffer creation logic
• Comprehensive test suite