https://gitlab.synchro.net/main/sbbs/-/merge_requests/415#note_4934

I mean, it looks the same in both places, and sftp.h is a C file.

It makes sense for a C++ file to say "I'm using this C interface", but it's silly for all C headers to have to say "If you're not using a C compiler, this C file describes C code".

Also, it alerted you to the fact that the contents of sftp.cpp are not declared in this header.
--- SBBSecho 3.20-Linux