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python-click/CHANGES.rst
aviau 0143a0a452 New upstream version 7.0
2019-01-07 11:51:19 -05:00

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Click Changelog
===============
Version 7.0
-----------
Released 2018-09-25
- Drop support for Python 2.6 and 3.3. (`#967`_, `#976`_)
- Wrap ``click.Choice``'s missing message. (`#202`_, `#1000`_)
- Add native ZSH autocompletion support. (`#323`_, `#865`_)
- Document that ANSI color info isn't parsed from bytearrays in
Python 2. (`#334`_)
- Document byte-stripping behavior of ``CliRunner``. (`#334`_,
`#1010`_)
- Usage errors now hint at the ``--help`` option. (`#393`_, `#557`_)
- Implement streaming pager. (`#409`_, `#889`_)
- Extract bar formatting to its own method. (`#414`_)
- Add ``DateTime`` type for converting input in given date time
formats. (`#423`_)
- ``secho``'s first argument can now be ``None``, like in ``echo``.
(`#424`_)
- Fixes a ``ZeroDivisionError`` in ``ProgressBar.make_step``, when the
arg passed to the first call of ``ProgressBar.update`` is 0.
(`#447`_, `#1012`_)
- Show progressbar only if total execution time is visible. (`#487`_)
- Added the ability to hide commands and options from help. (`#500`_)
- Document that options can be ``required=True``. (`#514`_, `#1022`_)
- Non-standalone calls to ``Context.exit`` return the exit code,
rather than calling ``sys.exit``. (`#533`_, `#667`_, `#1098`_)
- ``click.getchar()`` returns Unicode in Python 3 on Windows,
consistent with other platforms. (`#537`_, `#821`_, `#822`_,
`#1088`_, `#1108`_)
- Added ``FloatRange`` type. (`#538`_, `#553`_)
- Added support for bash completion of ``type=click.Choice`` for
``Options`` and ``Arguments``. (`#535`_, `#681`_)
- Only allow one positional arg for ``Argument`` parameter
declaration. (`#568`_, `#574`_, `#1014`_)
- Add ``case_sensitive=False`` as an option to Choice. (`#569`_)
- ``click.getchar()`` correctly raises ``KeyboardInterrupt`` on "^C"
and ``EOFError`` on "^D" on Linux. (`#583`_, `#1115`_)
- Fix encoding issue with ``click.getchar(echo=True)`` on Linux.
(`#1115`_)
- ``param_hint`` in errors now derived from param itself. (`#598`_,
`#704`_, `#709`_)
- Add a test that ensures that when an argument is formatted into a
usage error, its metavar is used, not its name. (`#612`_)
- Allow setting ``prog_name`` as extra in ``CliRunner.invoke``.
(`#616`_, `#999`_)
- Help text taken from docstrings truncates at the ``\f`` form feed
character, useful for hiding Sphinx-style parameter documentation.
(`#629`_, `#1091`_)
- ``launch`` now works properly under Cygwin. (`#650`_)
- Update progress after iteration. (`#651`_, `#706`_)
- ``CliRunner.invoke`` now may receive ``args`` as a string
representing a Unix shell command. (`#664`_)
- Make ``Argument.make_metavar()`` default to type metavar. (`#675`_)
- Add documentation for ``ignore_unknown_options``. (`#684`_)
- Add bright colors support for ``click.style`` and fix the reset
option for parameters ``fg`` and ``bg``. (`#703`_, `#809`_)
- Add ``show_envvar`` for showing environment variables in help.
(`#710`_)
- Avoid ``BrokenPipeError`` during interpreter shutdown when stdout or
stderr is a closed pipe. (`#712`_, `#1106`_)
- Document customizing option names. (`#725`_, `#1016`_)
- Disable ``sys._getframes()`` on Python interpreters that don't
support it. (`#728`_)
- Fix bug in test runner when calling ``sys.exit`` with ``None``.
(`#739`_)
- Clarify documentation on command line options. (`#741`_, `#1003`_)
- Fix crash on Windows console. (`#744`_)
- Fix bug that caused bash completion to give improper completions on
chained commands. (`#754`_, `#774`_)
- Added support for dynamic bash completion from a user-supplied
callback. (`#755`_)
- Added support for bash completions containing spaces. (`#773`_)
- Allow autocompletion function to determine whether or not to return
completions that start with the incomplete argument. (`#790`_,
`#806`_)
- Fix option naming routine to match documentation and be
deterministic. (`#793`_, `#794`_)
- Fix path validation bug. (`#795`_, `#1020`_)
- Add test and documentation for ``Option`` naming: functionality.
(`#799`_)
- Update doc to match arg name for ``path_type``. (`#801`_)
- Raw strings added so correct escaping occurs. (`#807`_)
- Fix 16k character limit of ``click.echo`` on Windows. (`#816`_,
`#819`_)
- Overcome 64k character limit when writing to binary stream on
Windows 7. (`#825`_, `#830`_)
- Add bool conversion for "t" and "f". (`#842`_)
- ``NoSuchOption`` errors take ``ctx`` so that ``--help`` hint gets
printed in error output. (`#860`_)
- Fixed the behavior of Click error messages with regards to Unicode
on 2.x and 3.x. Message is now always Unicode and the str and
Unicode special methods work as you expect on that platform.
(`#862`_)
- Progress bar now uses stderr by default. (`#863`_)
- Add support for auto-completion documentation. (`#866`_, `#869`_)
- Allow ``CliRunner`` to separate stdout and stderr. (`#868`_)
- Fix variable precedence. (`#873`_, `#874`_)
- Fix invalid escape sequences. (`#877`_)
- Fix ``ResourceWarning`` that occurs during some tests. (`#878`_)
- When detecting a misconfigured locale, don't fail if the ``locale``
command fails. (`#880`_)
- Add ``case_sensitive=False`` as an option to ``Choice`` types.
(`#887`_)
- Force stdout/stderr writable. This works around issues with badly
patched standard streams like those from Jupyter. (`#918`_)
- Fix completion of subcommand options after last argument (`#919`_,
`#930`_)
- ``_AtomicFile`` now uses the ``realpath`` of the original filename
so that changing the working directory does not affect it.
(`#920`_)
- Fix incorrect completions when defaults are present (`#925`_,
`#930`_)
- Add copy option attrs so that custom classes can be re-used.
(`#926`_, `#994`_)
- "x" and "a" file modes now use stdout when file is ``"-"``.
(`#929`_)
- Fix missing comma in ``__all__`` list. (`#935`_)
- Clarify how parameters are named. (`#949`_, `#1009`_)
- Stdout is now automatically set to non blocking. (`#954`_)
- Do not set options twice. (`#962`_)
- Move ``fcntl`` import. (`#965`_)
- Fix Google App Engine ``ImportError``. (`#995`_)
- Better handling of help text for dynamic default option values.
(`#996`_)
- Fix ``get_winter_size()`` so it correctly returns ``(0,0)``.
(`#997`_)
- Add test case checking for custom param type. (`#1001`_)
- Allow short width to address cmd formatting. (`#1002`_)
- Add details about Python version support. (`#1004`_)
- Added deprecation flag to commands. (`#1005`_)
- Fixed issues where ``fd`` was undefined. (`#1007`_)
- Fix formatting for short help. (`#1008`_)
- Document how ``auto_envvar_prefix`` works with command groups.
(`#1011`_)
- Don't add newlines by default for progress bars. (`#1013`_)
- Use Python sorting order for ZSH completions. (`#1047`_, `#1059`_)
- Document that parameter names are converted to lowercase by default.
(`#1055`_)
- Subcommands that are named by the function now automatically have
the underscore replaced with a dash. If you register a function
named ``my_command`` it becomes ``my-command`` in the command line
interface.
- Hide hidden commands and options from completion. (`#1058`_,
`#1061`_)
- Fix absolute import blocking Click from being vendored into a
project on Windows. (`#1068`_, `#1069`_)
- Fix issue where a lowercase ``auto_envvar_prefix`` would not be
converted to uppercase. (`#1105`_)
.. _#202: https://github.com/pallets/click/issues/202
.. _#323: https://github.com/pallets/click/issues/323
.. _#334: https://github.com/pallets/click/issues/334
.. _#393: https://github.com/pallets/click/issues/393
.. _#409: https://github.com/pallets/click/issues/409
.. _#414: https://github.com/pallets/click/pull/414
.. _#423: https://github.com/pallets/click/pull/423
.. _#424: https://github.com/pallets/click/pull/424
.. _#447: https://github.com/pallets/click/issues/447
.. _#487: https://github.com/pallets/click/pull/487
.. _#500: https://github.com/pallets/click/pull/500
.. _#514: https://github.com/pallets/click/issues/514
.. _#533: https://github.com/pallets/click/pull/533
.. _#535: https://github.com/pallets/click/issues/535
.. _#537: https://github.com/pallets/click/issues/537
.. _#538: https://github.com/pallets/click/pull/538
.. _#553: https://github.com/pallets/click/pull/553
.. _#557: https://github.com/pallets/click/pull/557
.. _#568: https://github.com/pallets/click/issues/568
.. _#569: https://github.com/pallets/click/issues/569
.. _#574: https://github.com/pallets/click/issues/574
.. _#583: https://github.com/pallets/click/issues/583
.. _#598: https://github.com/pallets/click/issues/598
.. _#612: https://github.com/pallets/click/pull/612
.. _#616: https://github.com/pallets/click/issues/616
.. _#629: https://github.com/pallets/click/pull/629
.. _#650: https://github.com/pallets/click/pull/650
.. _#651: https://github.com/pallets/click/issues/651
.. _#664: https://github.com/pallets/click/pull/664
.. _#667: https://github.com/pallets/click/issues/667
.. _#675: https://github.com/pallets/click/pull/675
.. _#681: https://github.com/pallets/click/pull/681
.. _#684: https://github.com/pallets/click/pull/684
.. _#703: https://github.com/pallets/click/issues/703
.. _#704: https://github.com/pallets/click/issues/704
.. _#706: https://github.com/pallets/click/pull/706
.. _#709: https://github.com/pallets/click/pull/709
.. _#710: https://github.com/pallets/click/pull/710
.. _#712: https://github.com/pallets/click/pull/712
.. _#719: https://github.com/pallets/click/issues/719
.. _#725: https://github.com/pallets/click/issues/725
.. _#728: https://github.com/pallets/click/pull/728
.. _#739: https://github.com/pallets/click/pull/739
.. _#741: https://github.com/pallets/click/issues/741
.. _#744: https://github.com/pallets/click/issues/744
.. _#754: https://github.com/pallets/click/issues/754
.. _#755: https://github.com/pallets/click/pull/755
.. _#773: https://github.com/pallets/click/pull/773
.. _#774: https://github.com/pallets/click/pull/774
.. _#790: https://github.com/pallets/click/issues/790
.. _#793: https://github.com/pallets/click/issues/793
.. _#794: https://github.com/pallets/click/pull/794
.. _#795: https://github.com/pallets/click/issues/795
.. _#799: https://github.com/pallets/click/pull/799
.. _#801: https://github.com/pallets/click/pull/801
.. _#806: https://github.com/pallets/click/pull/806
.. _#807: https://github.com/pallets/click/pull/807
.. _#809: https://github.com/pallets/click/pull/809
.. _#816: https://github.com/pallets/click/pull/816
.. _#819: https://github.com/pallets/click/pull/819
.. _#821: https://github.com/pallets/click/issues/821
.. _#822: https://github.com/pallets/click/issues/822
.. _#825: https://github.com/pallets/click/issues/825
.. _#830: https://github.com/pallets/click/pull/830
.. _#842: https://github.com/pallets/click/pull/842
.. _#860: https://github.com/pallets/click/issues/860
.. _#862: https://github.com/pallets/click/issues/862
.. _#863: https://github.com/pallets/click/pull/863
.. _#865: https://github.com/pallets/click/pull/865
.. _#866: https://github.com/pallets/click/issues/866
.. _#868: https://github.com/pallets/click/pull/868
.. _#869: https://github.com/pallets/click/pull/869
.. _#873: https://github.com/pallets/click/issues/873
.. _#874: https://github.com/pallets/click/pull/874
.. _#877: https://github.com/pallets/click/pull/877
.. _#878: https://github.com/pallets/click/pull/878
.. _#880: https://github.com/pallets/click/pull/880
.. _#883: https://github.com/pallets/click/pull/883
.. _#887: https://github.com/pallets/click/pull/887
.. _#889: https://github.com/pallets/click/pull/889
.. _#918: https://github.com/pallets/click/pull/918
.. _#919: https://github.com/pallets/click/issues/919
.. _#920: https://github.com/pallets/click/pull/920
.. _#925: https://github.com/pallets/click/issues/925
.. _#926: https://github.com/pallets/click/issues/926
.. _#929: https://github.com/pallets/click/pull/929
.. _#930: https://github.com/pallets/click/pull/930
.. _#935: https://github.com/pallets/click/pull/935
.. _#949: https://github.com/pallets/click/issues/949
.. _#954: https://github.com/pallets/click/pull/954
.. _#962: https://github.com/pallets/click/pull/962
.. _#965: https://github.com/pallets/click/pull/965
.. _#967: https://github.com/pallets/click/pull/967
.. _#976: https://github.com/pallets/click/pull/976
.. _#990: https://github.com/pallets/click/pull/990
.. _#991: https://github.com/pallets/click/pull/991
.. _#993: https://github.com/pallets/click/pull/993
.. _#994: https://github.com/pallets/click/pull/994
.. _#995: https://github.com/pallets/click/pull/995
.. _#996: https://github.com/pallets/click/pull/996
.. _#997: https://github.com/pallets/click/pull/997
.. _#999: https://github.com/pallets/click/pull/999
.. _#1000: https://github.com/pallets/click/pull/1000
.. _#1001: https://github.com/pallets/click/pull/1001
.. _#1002: https://github.com/pallets/click/pull/1002
.. _#1003: https://github.com/pallets/click/pull/1003
.. _#1004: https://github.com/pallets/click/pull/1004
.. _#1005: https://github.com/pallets/click/pull/1005
.. _#1007: https://github.com/pallets/click/pull/1007
.. _#1008: https://github.com/pallets/click/pull/1008
.. _#1009: https://github.com/pallets/click/pull/1009
.. _#1010: https://github.com/pallets/click/pull/1010
.. _#1011: https://github.com/pallets/click/pull/1011
.. _#1012: https://github.com/pallets/click/pull/1012
.. _#1013: https://github.com/pallets/click/pull/1013
.. _#1014: https://github.com/pallets/click/pull/1014
.. _#1016: https://github.com/pallets/click/pull/1016
.. _#1020: https://github.com/pallets/click/pull/1020
.. _#1022: https://github.com/pallets/click/pull/1022
.. _#1027: https://github.com/pallets/click/pull/1027
.. _#1047: https://github.com/pallets/click/pull/1047
.. _#1055: https://github.com/pallets/click/pull/1055
.. _#1058: https://github.com/pallets/click/pull/1058
.. _#1059: https://github.com/pallets/click/pull/1059
.. _#1061: https://github.com/pallets/click/pull/1061
.. _#1068: https://github.com/pallets/click/issues/1068
.. _#1069: https://github.com/pallets/click/pull/1069
.. _#1088: https://github.com/pallets/click/issues/1088
.. _#1091: https://github.com/pallets/click/pull/1091
.. _#1098: https://github.com/pallets/click/pull/1098
.. _#1105: https://github.com/pallets/click/pull/1105
.. _#1106: https://github.com/pallets/click/pull/1106
.. _#1108: https://github.com/pallets/click/pull/1108
.. _#1115: https://github.com/pallets/click/pull/1115
Version 6.7
-----------
(bugfix release; released on January 6th 2017)
- Make ``click.progressbar`` work with ``codecs.open`` files. See #637.
- Fix bug in bash completion with nested subcommands. See #639.
- Fix test runner not saving caller env correctly. See #644.
- Fix handling of SIGPIPE. See #626
- Deal with broken Windows environments such as Google App Engine's. See #711.
Version 6.6
-----------
(bugfix release; released on April 4th 2016)
- Fix bug in ``click.Path`` where it would crash when passed a ``-``. See #551.
Version 6.4
-----------
(bugfix release; released on March 24th 2016)
- Fix bug in bash completion where click would discard one or more trailing
arguments. See #471.
Version 6.3
-----------
(bugfix release; released on February 22 2016)
- Fix argument checks for interpreter invoke with ``-m`` and ``-c``
on Windows.
- Fixed a bug that cased locale detection to error out on Python 3.
Version 6.2
-----------
(bugfix release, released on November 27th 2015)
- Correct fix for hidden progress bars.
Version 6.1
-----------
(bugfix release, released on November 27th 2015)
- Resolved an issue with invisible progress bars no longer rendering.
- Disable chain commands with subcommands as they were inherently broken.
- Fix ``MissingParameter`` not working without parameters passed.
Version 6.0
-----------
(codename "pow pow", released on November 24th 2015)
- Optimized the progressbar rendering to not render when it did not
actually change.
- Explicitly disallow ``nargs=-1`` with a set default.
- The context is now closed before it's popped from the stack.
- Added support for short aliases for the false flag on toggles.
- Click will now attempt to aid you with debugging locale errors
better by listing with the help of the OS what locales are
available.
- Click used to return byte strings on Python 2 in some unit-testing
situations. This has been fixed to correctly return unicode strings
now.
- For Windows users on Python 2, Click will now handle Unicode more
correctly handle Unicode coming in from the system. This also has
the disappointing side effect that filenames will now be always
unicode by default in the ``Path`` type which means that this can
introduce small bugs for code not aware of this.
- Added a ``type`` parameter to ``Path`` to force a specific string type
on the value.
- For users running Python on Windows the ``echo`` and ``prompt`` functions
now work with full unicode functionality in the Python windows console
by emulating an output stream. This also applies to getting the
virtual output and input streams via ``click.get_text_stream(...)``.
- Unittests now always force a certain virtual terminal width.
- Added support for allowing dashes to indicate standard streams to the
``Path`` type.
- Multi commands in chain mode no longer propagate arguments left over
from parsing to the callbacks. It's also now disallowed through an
exception when optional arguments are attached to multi commands if chain
mode is enabled.
- Relaxed restriction that disallowed chained commands to have other
chained commands as child commands.
- Arguments with positive nargs can now have defaults implemented.
Previously this configuration would often result in slightly unexpected
values be returned.
Version 5.1
-----------
(bugfix release, released on 17th August 2015)
- Fix a bug in ``pass_obj`` that would accidentally pass the context too.
Version 5.0
-----------
(codename "tok tok", released on 16th August 2015)
- Removed various deprecated functionality.
- Atomic files now only accept the ``w`` mode.
- Change the usage part of help output for very long commands to wrap
their arguments onto the next line, indented by 4 spaces.
- Fix a bug where return code and error messages were incorrect when
using ``CliRunner``.
- added ``get_current_context``.
- added a ``meta`` dictionary to the context which is shared across the
linked list of contexts to allow click utilities to place state there.
- introduced ``Context.scope``.
- The ``echo`` function is now threadsafe: It calls the ``write`` method of the
underlying object only once.
- ``prompt(hide_input=True)`` now prints a newline on ``^C``.
- Click will now warn if users are using ``unicode_literals``.
- Click will now ignore the ``PAGER`` environment variable if it is empty or
contains only whitespace.
- The ``click-contrib`` GitHub organization was created.
Version 4.1
-----------
(bugfix release, released on July 14th 2015)
- Fix a bug where error messages would include a trailing ``None`` string.
- Fix a bug where Click would crash on docstrings with trailing newlines.
- Support streams with encoding set to ``None`` on Python 3 by barfing with
a better error.
- Handle ^C in less-pager properly.
- Handle return value of ``None`` from ``sys.getfilesystemencoding``
- Fix crash when writing to unicode files with ``click.echo``.
- Fix type inference with multiple options.
Version 4.0
-----------
(codename "zoom zoom", released on March 31st 2015)
- Added ``color`` parameters to lots of interfaces that directly or indirectly
call into echoing. This previously was always autodetection (with the
exception of the ``echo_via_pager`` function). Now you can forcefully
enable or disable it, overriding the auto detection of Click.
- Added an ``UNPROCESSED`` type which does not perform any type changes which
simplifies text handling on 2.x / 3.x in some special advanced usecases.
- Added ``NoSuchOption`` and ``BadOptionUsage`` exceptions for more generic
handling of errors.
- Added support for handling of unprocessed options which can be useful in
situations where arguments are forwarded to underlying tools.
- Added ``max_content_width`` parameter to the context which can be used to
change the maximum width of help output. By default Click will not format
content for more than 80 characters width.
- Added support for writing prompts to stderr.
- Fix a bug when showing the default for multiple arguments.
- Added support for custom subclasses to ``option`` and ``argument``.
- Fix bug in ``clear()`` on Windows when colorama is installed.
- Reject ``nargs=-1`` for options properly. Options cannot be variadic.
- Fixed an issue with bash completion not working properly for commands with
non ASCII characters or dashes.
- Added a way to manually update the progressbar.
- Changed the formatting of missing arguments. Previously the internal
argument name was shown in error messages, now the metavar is shown if
passed. In case an automated metavar is selected, it's stripped of
extra formatting first.
Version 3.3
-----------
(bugfix release, released on September 8th 2014)
- Fixed an issue with error reporting on Python 3 for invalid forwarding
of commands.
Version 3.2
-----------
(bugfix release, released on August 22nd 2014)
- Added missing ``err`` parameter forwarding to the ``secho`` function.
- Fixed default parameters not being handled properly by the context
invoke method. This is a backwards incompatible change if the function
was used improperly. See :ref:`upgrade-to-3.2` for more information.
- Removed the `invoked_subcommands` attribute largely. It is not possible
to provide it to work error free due to how the parsing works so this
API has been deprecated. See :ref:`upgrade-to-3.2` for more information.
- Restored the functionality of `invoked_subcommand` which was broken as
a regression in 3.1.
Version 3.1
-----------
(bugfix release, released on August 13th 2014)
- Fixed a regression that caused contexts of subcommands to be
created before the parent command was invoked which was a
regression from earlier Click versions.
Version 3.0
-----------
(codename "clonk clonk", released on August 12th 2014)
- formatter now no longer attempts to accomodate for terminals
smaller than 50 characters. If that happens it just assumes
a minimal width.
- added a way to not swallow exceptions in the test system.
- added better support for colors with pagers and ways to
override the autodetection.
- the CLI runner's result object now has a traceback attached.
- improved automatic short help detection to work better with
dots that do not terminate sentences.
- when definining options without actual valid option strings
now, Click will give an error message instead of silently
passing. This should catch situations where users wanted to
created arguments instead of options.
- Restructured Click internally to support vendoring.
- Added support for multi command chaining.
- Added support for defaults on options with ``multiple`` and
options and arguments with ``nargs != 1``.
- label passed to ``progressbar`` is no longer rendered with
whitespace stripped.
- added a way to disable the standalone mode of the ``main``
method on a Click command to be able to handle errors better.
- added support for returning values from command callbacks.
- added simplifications for printing to stderr from ``echo``.
- added result callbacks for groups.
- entering a context multiple times defers the cleanup until
the last exit occurs.
- added ``open_file``.
Version 2.6
-----------
(bugfix release, released on August 11th 2014)
- Fixed an issue where the wrapped streams on Python 3 would be reporting
incorrect values for seekable.
Version 2.5
-----------
(bugfix release, released on July 28th 2014)
- Fixed a bug with text wrapping on Python 3.
Version 2.4
-----------
(bugfix release, released on July 4th 2014)
- Corrected a bug in the change of the help option in 2.3.
Version 2.3
-----------
(bugfix release, released on July 3rd 2014)
- Fixed an incorrectly formatted help record for count options.
- Add support for ansi code stripping on Windows if colorama
is not available.
- restored the Click 1.0 handling of the help parameter for certain
edge cases.
Version 2.2
-----------
(bugfix release, released on June 26th 2014)
- fixed tty detection on PyPy.
- fixed an issue that progress bars were not rendered when the
context manager was entered.
Version 2.1
-----------
(bugfix release, released on June 14th 2014)
- fixed the :func:`launch` function on windows.
- improved the colorama support on windows to try hard to not
screw up the console if the application is interrupted.
- fixed windows terminals incorrectly being reported to be 80
characters wide instead of 79
- use colorama win32 bindings if available to get the correct
dimensions of a windows terminal.
- fixed an issue with custom function types on Python 3.
- fixed an issue with unknown options being incorrectly reported
in error messages.
Version 2.0
-----------
(codename "tap tap tap", released on June 6th 2014)
- added support for opening stdin/stdout on Windows in
binary mode correctly.
- added support for atomic writes to files by going through
a temporary file.
- introduced :exc:`BadParameter` which can be used to easily perform
custom validation with the same error messages as in the type system.
- added :func:`progressbar`; a function to show progress bars.
- added :func:`get_app_dir`; a function to calculate the home folder
for configs.
- Added transparent handling for ANSI codes into the :func:`echo`
function through ``colorama``.
- Added :func:`clear` function.
- Breaking change: parameter callbacks now get the parameter object
passed as second argument. There is legacy support for old callbacks
which will warn but still execute the script.
- Added :func:`style`, :func:`unstyle` and :func:`secho` for ANSI
styles.
- Added an :func:`edit` function that invokes the default editor.
- Added an :func:`launch` function that launches browsers and applications.
- nargs of -1 for arguments can now be forced to be a single item through
the required flag. It defaults to not required.
- setting a default for arguments now implicitly makes it non required.
- changed "yN" / "Yn" to "y/N" and "Y/n" in confirmation prompts.
- added basic support for bash completion.
- added :func:`getchar` to fetch a single character from the terminal.
- errors now go to stderr as intended.
- fixed various issues with more exotic parameter formats like DOS/Windows
style arguments.
- added :func:`pause` which works similar to the Windows ``pause`` cmd
built-in but becomes an automatic noop if the application is not run
through a terminal.
- added a bit of extra information about missing choice parameters.
- changed how the help function is implemented to allow global overriding
of the help option.
- added support for token normalization to implement case insensitive handling.
- added support for providing defaults for context settings.
Version 1.1
-----------
(bugfix release, released on May 23rd 2014)
- fixed a bug that caused text files in Python 2 to not accept
native strings.
Version 1.0
-----------
(no codename, released on May 21st 2014)
- Initial release.
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