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xonsh v0.5.3 Release Notes

  • ➕ Added:

    • Tab completion xontrib for python applications based on click framework.
    • Added on_transform_command event for pre-processing that macros can't handle.
    • Autodetection of backgroundability by binary analysis on POSIX.
    • 👉 New argument expand_user=True to tools.expand_path.
    • New $COMPLETION_QUERY_LIMIT environment variable for setting the number of completions above which the user will be asked if they wish to see the potential completions.
    • 👉 Users may now redirect stdout to stderr in subprocess mode.

    🔄 Changed:

    • The Block and Functor context managers from xonsh.contexts have been rewritten to use xonsh's macro capabilities. You must now enter these via the with! statement, e.g. with! Block(): pass.
    • The distributed xontrib now needs to use the with! statement, since it relies on Functor.
    • telnet has been flagged as unthreadable.
    • When $DYNAMIC_CWD_ELISION_CHAR is non empty and the last dir of cwd is too long and shortened, the elision char is added at the end.
    • pygments is no longer a strict dependency of the prompt_toolkit backend. If pygments is not installed, the PTK backend will use the default ansi color settings from the terminal. Syntax highlighting requires that pygments is installed.
    • Events are now keyword arguments only
    • ⏪ Restored on_precommand to its original signature.
    • Move built_ins.expand_path to tools.expand_path.
    • 📇 Rename tools.expandpath to tools._expandpath.
    • ➕ Added gvim command to unthreadable predictors.
    • The source alias now passes $ARGS down to file it is sourcing.

    ✂ Removed:

    • 🚚 XonshBlockError has been removed, since it no longer serves a purpose.

    🛠 Fixed:

    • PopenThread will now re-issue SIGINT to the main thread when it is received.
    • 🛠 Fixed an issue that using sqlite history backend does not kill unfinished jobs when quitting xonsh with a second "exit".
    • 🛠 Fixed an issue that xonsh would fail over to external shells when running .xsh script which raises exceptions.
    • 🛠 Fixed an issue with openpty() returning non-unix line endings in its buffer. This was causing git and ssh to fail when xonsh was used as the login shell on the server. See https://mail.python.org/pipermail/python-list/2013-June/650460.html for more details.
    • ⏪ Restored the ability to Z and fg processes on posix platforms.
    • CommandPipelines were not guaranteed to have been ended when the return code was requested. This has been fixed.
    • Introduce path expansion in is_writable_file to fix $XONSH_TRACEBACK_LOGFILE=~/xonsh.log.
    • ⏪ Backgrounding a running process (Z) now restores ECHO mode to the terminal in cases where the subprocess doesn't properly restore itself. A major instance of this behaviour is Python's interactive interpreter.
    • 🖨 Readline backend would not ask the user to confirm the printing of completion options if they numbered above a certain value. Instead they would be dumped to the screen. This has been fixed.
    • Jupyter kernel was no longer properly running subprocess commands. This has been fixed.
    • 👍 The filename is applied to the target of the source alias, providing better tracebacks.