xonsh Files

Key points in this release from @anki-code:

• This release is highly recommended. Please update your xonsh.
• Added stripping the trailing new line character - the long awaited feature. So now you can run just id $(whoami).
• Added $XONSH_SUBPROC_OUTPUT_FORMAT to manage the output format.
• Added SpecModifierAlias that allows manage the specification of the process in the command. See examples in [#5481], [#5443], [#5494].
• Fixed a bunch of issues around treating the process signals, exit codes and cases when process was suspended by OS.
• Fixed a bunch of "Bad file descriptor" and IO issues that were related to big refactoring in the past.
• We started https://xonsh.zulipchat.com to publish news and chatting.
• Huge amount of other changes and fixes that were covered by many new tests.

Added:

• Added $XONSH_SUBPROC_OUTPUT_FORMAT to switch the way to return the output lines. Default stream_lines to return text. Alternative list_lines to return the list of lines. Now you can run du $(ls) without additional stripping. Also supported custom lambda function to process lines (if you're looking for alternative to bash IFS). Use [#5481] if you want to manage output in the command. (by @anki-code)
• Added SpecModifierAlias class to have an ability to create alias that modifies spec before run e.g. xthread alias. (by @anki-code)
• Saving history in case of any type of exiting the shell (by @anki-code).
• Added xthread and xunthread aliases to force command running as threaded and unthreaded. (by @anki-code)
• Reading stop signals from the process and update the process state (#5361) (by @anki-code).
• Now last executed CommandPipeline is available in __xonsh__.last. (by @anki-code)
• Added xonsh --no-env option to run xonsh without inheriting the environment variables. Now by running xonsh --no-rc --no-env you have pure xonsh session. (by @anki-code)
• Added support of NixOS core tools in predict_threadable. (by @anki-code)
• Added catching an exceptions during load a history backend to avoid shell exiting e.g. on permission error (by @anki-code).
• Added catching an exception when cache file is not writable (by @anki-code).
• Saving history on SIGINT. Development tools like PyCharm send SIGINT before killing the run and doing this is the last chance to save history. (by @anki-code)
• Added FuncAlias to process callable aliases (by @anki-code).
• Added alias name printing in case of exception in alias (by @anki-code).
• Added thread class, name, func and alias names to thread exception for easy understanding the source of issue. (by @anki-code)
• Added spec.raise_subproc_error for fine-tuning exceptions via SpecModifierAlias (#5494). (by @anki-code)
• Added catching ChildProcessError in jobs. Avoiding hanging aliases in some cases (by @anki-code).
• Added mode $XONSH_TRACE_SUBPROC=3 to show more information about pipeline. (by @anki-code)
• Added env.detype_all() to get all available variables that is possible to detype (by @anki-code).
• Added "Callable alias and capturing" to the tutorial. (by @anki-code)
• Xonfig: show sensitive env variables that could affect the shell behavior. (by @anki-code)
• Added section "Use the Nix Package manager with Xonsh" to "Platform-specific tips and tricks" (by @anki-code).
• Added xonsh support into Jupytext project! Jupytext is to store Jupyter notebooks as a plain text documents.
• Added shortcut -st for --shell-type. (by @anki-code)

Changed:

• Now the ending new line symbol \n will be stripped from the single line output. For $(whoami) you will get 'user' instead of 'user\n'. (by @anki-code)
• The home based ~/.xonshrc will not be executed in non-interactive mode (#5491). (by @anki-code)
• Env variables completion: now use substring for search and then sort results by the position of substring and then alphabetically. PR 5388. (by @anki-code)
• Xonsh AppImage downgraded to Python 3.11. We need to resolve 3.12 parser support (5166) before upgrade. (by @anki-code)
• jobs: default representation changed to dict. (by @anki-code)
• The CommandPipeline repr will not show descriptors by default. Use XONSH_DEBUG mode to see them. (by @anki-code)
• Cleaning logic and functions around threading and capturing in procs/specs.py file. (by @anki-code)
• Prompt: env_name will have yellow color by default. (by @anki-code)
• Show root and @# in prompt if user is superuser. (by @anki-code)
• $XONSH_TRACE_SUBPROC=2 returns more useful details. (by @anki-code)
• Minor cleanup of commands_cache, unifying behavior across platforms. (by @jaraco)

Removed:

• No longer is . implied for running commands on Windows. Instead the behavior is the same across platforms. Windows users will need to prefix ./ or .\ to run commands from the current directory (#5476). (by @jaraco)
• Unpin prompt-toolkit version (#5438). (by @anki-code)

Fixed:

• Fixed populating the return code for interrupted process. (by @anki-code)
• Fixed Bad file descriptor and I/O errors after running callable alias (#5435). (by @anki-code)
• Fixed processing exit signals and exceptions (e.g. SIGHUP in [#5381]) to provide careful exiting with right exit code and TTY cleaning. (by @anki-code)
• Fixed redirect with python substitution e.g. echo 1 > @('/tmp/file') is working now. (by @anki-code)
• Fixed xonsh -DVAR=VAL behavior: initiate env variables before shell initialization. (by @anki-code)
• Prevent exception on start up if dircolors util is wrong. (by @anki-code)
• Fixed showing exception message in some cases. (by @anki-code)
• Fixed empty stacktrace for CalledProcessError. (by @anki-code)
• Fixed showing alias description using superhelp e.g. which?. (by @anki-code)
• Fixed TypeError in xoreutils. (by @anki-code)
• Commands on Windows now honor the case as they appear on the file system (#5469). (by @jaraco)
• Windows: fixed path to RC file in xonfig web. (by @anki-code)

Authors:

• anki-code
• Jason R. Coombs
• Gil Forsyth
• Noortheen Raja
• Peter Ye
• doronz88
• jyn
• l-no
• amacfie-tc