The help and version arguments are still included by default, but which
default arguments to include can be overridden at ArgumentParser creation.
argparse generally copies Python argparse behavior. This includes a
default `--help`/`-h` argument to print a help message and exit. Some
developers using argparse find the automatic exit to be undesirable.
The Python argparse has an opt-out parameter when constructing an
ArgumentParser. Using `add_help=False` avoids adding a default `--help`
argument and allows the developer to implement a custom help.
This commit adds a similar opt-out to our C++ argparse, but keeps the
current behavior as the default. The `--help`/`-h` and `--version`/`-v`
Arguments handle their own output and exit rather than specially treating
them in ArgumentParser::parse_args_internal.
Closes#119Closes#138Closes#139
Signed-off-by: Sean Robinson <sean.robinson@scottsdalecc.edu>
The change also fixes a rare bug introduced in 9007958:
when there are duplicated keys, insert_or_update overrides
previously inserted ones, emplace doesn't.
fixes: p-ranav/argparse#59
This change also explicitly lists the source files
for CMake. This is because `GLOB` does not remove
old files when switching branches in Git, and
`CONFIGURE_DEPENDS` will add unstaged files after
stashing.
See also: https://cmake.org/cmake/help/latest/command/file.html#glob
