xonsh 0.5.3

on Python PyPI

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
  recieved.
• 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 gauranteeded 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.