Same in Python, Rust, Haskell and probably many others.

But apparently JS does work that way, that is its filter always iterates over everything and returns a new array and not some iterator object.

That command will produce a list of (dynamic) libraries that are being used by that helper. It will look somewhat like this (this is copied from my Arch instalation):

	linux-vdso.so.1 (0x00007edb2f060000)
	libcurl.so.4 => /usr/lib/libcurl.so.4 (0x00007edb2ee6f000)
	libpcre2-8.so.0 => /usr/lib/libpcre2-8.so.0 (0x00007edb2edd1000)
	libz.so.1 => /usr/lib/libz.so.1 (0x00007edb2edb8000)
	libc.so.6 => /usr/lib/libc.so.6 (0x00007edb2ebcc000)
	libnghttp3.so.9 => /usr/lib/libnghttp3.so.9 (0x00007edb2eba9000)
	libnghttp2.so.14 => /usr/lib/libnghttp2.so.14 (0x00007edb2eb7f000)
	libidn2.so.0 => /usr/lib/libidn2.so.0 (0x00007edb2eb5b000)
	libssh2.so.1 => /usr/lib/libssh2.so.1 (0x00007edb2eb12000)
	libpsl.so.5 => /usr/lib/libpsl.so.5 (0x00007edb2eafe000)
	libssl.so.3 => /usr/lib/libssl.so.3 (0x00007edb2ea24000)
	libcrypto.so.3 => /usr/lib/libcrypto.so.3 (0x00007edb2e400000)
	libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x00007edb2e9d0000)
	libzstd.so.1 => /usr/lib/libzstd.so.1 (0x00007edb2e8ef000)
	libbrotlidec.so.1 => /usr/lib/libbrotlidec.so.1 (0x00007edb2e8e0000)
	/lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007edb2f062000)
	libunistring.so.5 => /usr/lib/libunistring.so.5 (0x00007edb2e250000)
	libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x00007edb2e178000)
	libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x00007edb2e14a000)
	libcom_err.so.2 => /usr/lib/libcom_err.so.2 (0x00007edb2e8d8000)
	libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0x00007edb2e13c000)
	libkeyutils.so.1 => /usr/lib/libkeyutils.so.1 (0x00007edb2e8d1000)
	libresolv.so.2 => /usr/lib/libresolv.so.2 (0x00007edb2e12a000)
	libbrotlicommon.so.1 => /usr/lib/libbrotlicommon.so.1 (0x00007edb2e107000)

It might be a good idea actually to try running this both when it works and when it doesn’t, maybe there is some difference?

ldd /usr/lib/git-core/git-remote-https?

I really need to try out Mercury one day. When we did a project in Prolog at uni, it felt cool, but also incredibly dynamic in a bad way. There were a few times when we misspelled some clause, which normally would be an error, but in our case it just meant falsehood. We then spent waaay to much time searching for these. I can’t help but think that Mercury would be as fun as Prolog, but less annoying.

I actually use from time to time the Bower email client, which is written in Mercury.

Have you tried etckeeper? I haven’t, but it’s supposed to be an improvement over just using git in this usecase.