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Version 1.9: TOML
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@henryiii henryiii released this 19 Jan 23:03
v1.9.0
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Config file handling was revamped to fix common issues, and now supports reading TOML.

Adding options is significantly more powerful with support for things like
std::tuple and std::array, including with transforms. Several new
configuration options were added to facilitate a wider variety of apps. GCC
4.7 is no longer supported.

  • Config files refactored, supports TOML (may become default output in 2.0) #362
  • Added two template parameter form of add_option, allowing std::optional to be supported without a special import #285
  • string_view now supported in reasonable places #300, #285
  • immediate_callback, final_callback, and parse_complete_callback added to support controlling the App callback order #292, #313
  • Multiple positional arguments maintain order if positionals_at_end is set. #306
  • Pair/tuple/array now supported, and validators indexed to specific components in the objects #307, #310
  • Footer callbacks supported #309
  • Subcommands now support needs (including nameless subcommands) #317
  • More flexible type size, more useful add_complex #325, [#370][]
  • Added new validators CLI::NonNegativeNumber and CLI::PositiveNumber #342
  • Transform now supports arrays #349
  • Option groups can be hidden #356
  • Add CLI::deprecate_option and CLI::retire_option functions #358
  • More flexible and safer Option default_val [#387][]
  • Backend: Cleaner type traits #286
  • Backend: File checking updates [#341][]
  • Backend: Using pre-commit to format, checked in GitHub Actions #336
  • Backend: Clang-tidy checked again, CMake option now CL11_CLANG_TIDY #390
  • Backend: Warning cleanup, more checks from klocwork #350, Effective C++ #354, clang-tidy #360, CUDA NVCC #365, cross compile #373, sign conversion #382, and cpplint #400
  • Docs: CLI11 Tutorial now hosted in the same repository #304, #318, #374
  • Bugfix: Fixed undefined behavior in checked_multiply #290
  • Bugfix: ->check() was adding the name to the wrong validator #320
  • Bugfix: Resetting config option works properly #301
  • Bugfix: Hidden flags were showing up in error printout #333
  • Bugfix: Enum conversion no longer broken if stream operator added #348
  • Build: The meson build system supported #299
  • Build: GCC 4.7 is no longer supported, due mostly to GoogleTest. GCC 4.8+ is now required. #160
  • Build: Restructured significant portions of CMake build system #394

Converting from CLI11 1.8:

  • Some deprecated methods dropped
    • add_set* should be replaced with ->check/->transform and CLI::IsMember since 1.8
    • get_defaultval was replaced by get_default_str in 1.8
  • The true/false 4th argument to add_option is expected to be removed in 2.0, use ->capture_default_str() since 1.8
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