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05d8b565ad
Unfortunately some duplicate files must remain in lib/libc/wasi/libc-top-half because they include internal headers *in the same directory* which have edits relative to upstream musl. Because C is an amazing language, there is no way to make it so that e.g. upstream musl's src/stdio/fputc.c includes wasi-libc's src/stdio/putc.h instead of the upstream putc.h. The preprocessor always searches the current directory first for quote includes. Anyway, this still takes us from 2.9M to 1.4M for the combination of lib/libc/wasi and lib/libc/include/wasm-wasi-musl, so I still call it a win.