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optparse 1.7.5
==============
* We no longer coerce the type of an option `default` to match that of
its `type` argument when `action = "callback"`.
Thanks husheng (@hs3434) for bug report (#47).
optparse 1.7.4
==============
* Revises vignette engine specification in the `DESCRIPTION` to suppress new CRAN check NOTE (#43).
optparse 1.7.3
==============
* The errors raised by `parse_args()` (and `parse_args2()`) are now of class "optparse\_parse\_error".
When `interactive()` is `FALSE` we now print out a usage string followed by
a (less verbose) error message.
* Throws a more informative error message for unknown short flags when ``positional_arguments=TRUE``.
Thanks Greg Minshall for bug report (#42).
optparse 1.7.1
==============
* Add a ``formatter`` argument to ``OptionParser()`` for a function to format the usage message (#30).
By default uses the new function ``IndentedHelpFormatter()``.
`{optparse}` also provides the new function ``TitledHelpFormatter()``.
Thanks Ni Huang for suggestion.
optparse 1.6.6
==============
* Throws an error for unknown short flags and long flags when ``positional_arguments=TRUE``.
Thanks Greg Minshall for bug report (#34).
* If the ``callback`` parameter of ``add_option`` / ``make_option`` is not ``NULL`` then
the default of ``action`` is now ``"callback"``. Thanks Greg Minshall for suggestion (#35).
* Better documentation of ``action=="callback"`` in the man page for ``add_option`` and ``make_option``.
Thanks Greg Minshall for bug report (#35).
optparse 1.6.4
==============
* Fixes bug in printing help for ``action=="callback"`` when ``metavar==NULL`` (#29).
Thanks Ni Huang for bug report.
* Throws an error when passed short flags more than one letter long (#32).
Thanks Gautier Richard for bug report.
optparse 1.6.2
==============
* Fixs a parsing bug when ``action=="callback"`` and ``positional_argument==TRUE`` (#28).
Thanks Ni Huang for bug report.
optparse 1.6.1
==============
* Improves accuracy of README (#27). Thanks Alex Penson for bug report.
optparse 1.6.0
==============
* Supports callback actions (#26). Thanks Gyu Jin Choi for patch.
* If ``interactive() == FALSE`` and ``print_help_and_exit == TRUE`` then
``optparse`` will now call ``quit(status=0)`` instead of ``quit(status=1)`` after
printing the help message (this matches behaviour of the python package).
* Better error message when forgetting to set ``add_help_option=FALSE`` when
defining an ``-h`` or ``--help`` flag. Thanks Jeff P. Bruce for bug report.
* Increment ``getopt`` requirement so that empty strings are parsed correctly.
Thanks Matthew Flickinger for bug report.
optparse 1.4.4
==============
* Minor documentation fixes. Thanks J. J. Ramsey and Daeyoung Kim for bug reports.
* Fix bug when ``add_help_option`` in ``OptionParser`` set to ``FALSE``. Thanks to Jeff Bruce for bug report.
* ``parse_args`` now supports ``convert_hyphens_to_underscores`` argument which converts any hyphens to underscores
when returning the list of options
* Now includes the convenience function ``parse_args2`` which wraps ``parse_args`` with ``positional_arguments`` set to ``TRUE``
and ``convert_hyphens_to_underscores`` set to ``TRUE``.
optparse 1.3.2
==============
* ``optparse`` should no longer give any warnings when ``options(warnPartialMatchArgs=TRUE)``. Thanks Rich FitzJohn for patch.
* ``print_help`` no longer throws an error if we have a default argument of length zero. Thanks Benjamin Tyner for bug report.
optparse 1.3.0
==============
* ``OptionParser`` and ``OptionParserOption`` S4 classes are now exported. Thanks Peter Humburg for patch.
optparse 1.2.0
==============
* Parameter ``positional_arguments`` of function ``parse_args`` now accepts one
or two numeric values that denote the minimum and maximum number of supported
positional arguments.
Thanks Kirill Müller for patch.
* If ``interactive() == TRUE`` then ``parse_args`` will no longer ``quit(status=1)``
after printing a help message but will instead throw an error.
``optparse`` will continue to ``quit(status=1)`` after printing a help message
for non-interactive Rscripts unless ``print_help_and_exit == FALSE``.
* In ``make_option`` argument ``type="numeric"`` automatically cast to ``double``.
Previously users might have received an error passing negative numbers if they
accidentally specified "numeric" instead of "double".
* Bug fixed in printing usage message for options with default value of NA
and a help string including "%default".
Thanks Stefan Seemayer for bug report and patch.
optparse 1.0.2
==============
* Project website moved to https://github.com/trevorld/optparse
* We now replace all occurrences of %prog in usage message (including description and epilogue).
Previously we would only replace one occurrence and didn't make replacements in description and epilogue.
* Fix bug in ``parse_args`` when we have options with no short flag and positional_arguments=TRUE.
Thanks Miroslav Posta for bug report.
optparse 1.0.0
==============
* Added `description` and `epilogue` arguments to `OptionParser` to allow
users to add more information to generated help messages
* Slightly alters the generated usage string
to match more closely what the Python module does
* No longer exports S4 classes that represent OptionParser and OptionParserOption
* Now requires package getopt (>= 1.19) which has also been moved to
Imports field from Depends field in DESCRIPTION
* Now also Suggests stringr package in DESCRIPTION
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