A header that builds on json.hpp (such as the planned json_view.hpp) must
not inline json.hpp: its single-header version would contain a second copy
of the library, and that copy would change with every library change.
The optional config key "external" lists include paths that are kept as
#include directives. Only the first directive per path is kept; repeated
ones are commented out, as the tool already does for inlined headers.
config_json_view.json uses it for json_view.hpp; the existing configs do
not set it, and json.hpp and json_fwd.hpp regenerate byte-identically.
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Niels Lohmann
Florian Albrechtskirchinger