xonsh v0.9.19 release notes (2020-08-09)

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xonsh v0.9.19 Release Notes

Release Date: 2020-08-09 // over 3 years ago

Added:
👍 history command now supports flush action
➕ Added new items on "Bash to xsh" page
⚠ JsonHistory: added history gc --force switch to allow user to override above warning.
⚠ JsonHistoryGC: display following warning when garbage collection would delete "too" much data and don't delete anything.

"Warning: History garbage collection would discard more history ({size_over} {units}) than it would keep ({limit_size}).\n"
"Not removing any history for now. Either increase your limit ($XONSH_HIST_SIZE), or run history gc --force.",

It is displayed when the amount of history on disk is more than double the limit configured (or defaulted) for $XONSH_HIST_SIZE.
$LS_COLORS code 'mh' now recognized for (multi) hard-linked files.
🔒 $LS_COLORS code 'ca' now recognized for files with security capabilities (linux only).
✅ CI step to run flake8 after pytest.
RichCompletion for completions with different display value, description and prefix_len.
Allow completer access to multiline document when available via xonsh.completers.tools.get_ptk_completer().current_document.
⏪ abbrevs word expasion can now be reverted by pressing
the space bar second time immediately after the previous
word got expanded.
ulimit command.
🚦 pdb xontrib, that runs pdb debugger on reception of SIGUSR1 signal.
xontrib-xpg is a xontrib for running or explaining sql queries for posgresql database.

🔄 Changed:
- Xonsh now launches subprocesses with their argv[0] argument containing
  the command exactly as inserted by the user instead of setting it to the
  resolved path of the executable. This is for consistency with bash and other
  shells.
- ➕ Added ability to register, deregister environment variables;
  0️⃣ centralized environment default variables
- ➕ Added exit to the "Bash to xsh" article.
- xonsh.main _failback_to_other_shells now tries user's login shell (in $SHELL) before trying system wide shells from /etc/shells.
- 📜 The current working directory is now correctly obtained in line 501 of xonsh/parsers/base.py
- ⚠ Garbage collection avoids deleting history and issues a warning instead if existing history is more than double the comfigured limit.
  ⚠ This protects active users who might have accumulated a lot of history while a bug was preventing garbage collection. The warning
  will be displayed each time Xonsh is started until user takes action to reconcile the situation.
- tests\test_integrations.py no longer runs with XONSH_DEBUG=1 (because new, debug-only progress messages from history were breaking it).
- ⚡️ Updated pytest_plugin for pytest 5.4 API, pip requirements for pytest>= 5.4
- Major improvements to Jedi xontrib completer:
  - Use new Jedi API
  - Replace the existing python completer
  - Create rich completions with extra info
  - Use entire multiline document if available
  - Complete xonsh special tokens
  - Be aware of _ (last result)
  - Only show dunder attrs when prefix ends with '_'
- ⚡️ Many files are starting to be formatted using pyupgrade --py36-plus, in order to automatically update to newer
  Python constructs.
- xontrib load does not stop loading modules on error any more.
🗄 Deprecated:
- ✅ pytest --flake8 now exits with error message to use flake8 instead.
  👍 Allows single list of lint exceptions to apply in CI and your IDE.
✂ Removed:
- ✂ Removed history replay
- 📦 pytest-flake8 package from requirements*.txt
- Xonsh now relies exclusively on Setuptools for install.
- 🚚 Compatibility with Python 3.5 has been removed as well as all related code. In
  particular xonsh.inspector does not defined getouterframes anymore, use
  inspect.getouterframe directly.
🛠 Fixed:
👻 Unhandled exception triggered by unexpected return from callable alias.
🛠 Fix path completer throwing exception sometimes
🛠 Fixed help operator not displaying definition for callables.
JsonHistory.files(): Now once again enumerates history files from the directory. This has been broken for about 2 years.
JsonHistory.run_gc(): Don't busy loop while waiting for history garbage collection to complete, sleep a bit instead.
📱 This does much to keep Xonsh ptk_shell responsive when dealing with very large history on disk.
🛠 Fixed JSON history indexing error.
🛠 Fixed syntax error in scripts containing line continuation syntax.
$LS_COLORS code 'fi' now used for "regular files", as it should have been all along. (was 'rs')
👀 See (#3608)[https://github.com/[/issues/3608](https://github.com/xonsh/xonsh/issues/3608)].
pyghooks.color_files now follows implememntation of ls --color closely. Thanks @qwenger!
However, a few documented differences remain due to use in Xonsh.
🛠 $LS_COLORS['ln'] = 'target' now works. Also fixes #3578.
🛠 Fixed exit code for commands executed via -c (#3402)
Logical subprocess operators now work after long arguments (e.g. --version).
pip completer no longer erroneously fires for pipx
⚡️ Updated development guide to reference flake8 instead of pylint
Corrected flake8 config for allowed exceptions.
✅ various pytest warnings in a "clean" test run.
The current Mercurial topic is shown.
🛠 Fixed import problems due to modules using deprecated pkg_resources methods by proxying calls to the underlying loader.
Typo in 'source' alias.
Crash in 'completer' completer.
Don't complete unnecessarily in 'base' completer
🤡 Viewing mock objects in the shell
🛠 Fixed formatting error in vox rm command.

Authors:
- Anthony Scopatz
- Gil Forsyth
- Morten Enemark Lund
- Bob Hyman
- David Strobach
- Burak Yiğit Kaya
- Matthias Bussonnier
- anki-code
- David Dotson
- con-f-use
- Daniel Shimon
- Jason R. Coombs
- Gyuri Horak
- Achim Herwig
- Marduk Bolaños
- Stefane Fermigier
- swedneck
- Feng Tian
- cafehaine
- paugier

xonsh v0.9.19

Version Release Notes from August 09, 2020 (over 3 years ago)

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xonsh v0.9.19 Release Notes