Package for parsing command-line arguments to Julia programs.
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carlobaldassi More fixes for julia 0.7 compatibility
new iterator protocol, isletter, coalesce->something
Latest commit 1cebe34 Jun 12, 2018


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ArgParse.jl is a package for parsing command-line arguments to Julia programs.

Installation and usage

To install the module, use Julia's package manager:

julia> Pkg.add("ArgParse")

Dependencies will be installed automatically. The module can then be loaded like any other Julia module:

julia> using ArgParse


  • STABLEmost recently tagged version of the documentation.
  • LATESTin-development version of the documentation.

See also the examples in the examples directory.

Changes in release 0.6.0-

  • Added support for Julia v0.7, dropped support for Julia v0.5.
  • Added exit_after_help setting to control whether to exit julia after help/version info is displayed (which is still the defult) or to just abort the parsing and return nothing instead.

Changes in release 0.5.0

  • Added support for Julia v0.6, dropped support for Julia v0.4.
  • The default output type is now Dict{String,Any}, as stated in the docs, rather than Dict{AbstractString,Any}.
  • Added docstrings, moved documentation to Documenter.jl

Changes in release 0.4.0

New features

  • Added support for vectors of METAVAR names (see #33)

Other changes

  • Support for Julia v0.3 was dropped.

Changes in release 0.3.1

New available settings

  • fromfile_prexif_chars (see #27)
  • preformatted_desciption/preformatted_epilog (see #28)

Changes in release 0.3.0

Breaking changes

Upgrading from versions 0.2.X to 0.3.X, the following API changes were made, which may break existing code:

  • Option arguments are no longer evaluated by default. This is for security reasons. Evaluation can be forced on a per-option basis with the eval_arg=true setting (although this is discuraged).
  • The syntax of the add_arg_table function has changed, it now takes a Dict object instead of an @options opbject, since the dependency on the Options.jl module was removed. (The @add_arg_table macro is unchanged though.)

Other changes

  • Documented that overloading the function ArgParse.parse_item can be used to instruct ArgParse on how to parse custom types. Parse error reporting was also improved
  • Removed dependecy on the Options.jl module
  • Enabled precompilation on Julia 0.4