Create a ridiculously frugal version without any STL

[xparq]

A single copy of the original (for inserting '\0'-s), with "home-grown" index arrays (with a templated index type, 1-byte by default, just for the vibe :) ), even templated, with a fixed-size allocator (maybe even default?)...
(Obviously, with no string vector/map "all" results etc. But the rest should be fine. People could did it with C... ;) )

malloc, memcpy, perhaps memcmp still needed, so then string.h is already inevitable -- but that's still nowhere near the entire tanker ship of the STL (with tiny little single parts of it like <compare> secretly #including 53(! :-o ) others, at 500K total (4x the size of an entire UPXed gmake.exe :) ) with MSVC)...

• Should be optimized for min. allocations and RAM usage in general. -- Albeit, if there's a heap anyway, allocophobia at args processing time is kinda funny... (Fragmentation's still a thing, though.)
• And since option lookups are also used internally, in the loop, that should be kinda fast, too.