implements column-aligned multi-line help message for arguments #257
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…ensitive subcommands can be hidden from the common help message but still allows parsing.
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Hi, I'd like to provide this little implementation regarding column-aligned multi-line help message that works for arguments (not subcommands). This was discussed in #248 but the original poster didn't open a pull request.
In test_help.cpp I didn't see a test that validates the help message on a per-character level, so I didn't write any test.