Nginx location block to serve one file under many names

Every static site ends up with a pile of one-off files at the root: /robots.txt, /favicon.ico, /humans.txt, /.well-known/security.txt, and so on. I used to have a location block per file. Nowadays I use one regex block and a map, which keeps the config short and makes it obvious where each file lives on disk.

map $uri $one_file {
    /robots.txt           /srv/meta/robots.txt;
    /humans.txt           /srv/meta/humans.txt;
    /favicon.ico          /srv/meta/favicon.ico;
    /.well-known/security.txt  /srv/meta/security.txt;
}

server {
    listen 443 ssl;
    server_name example.com;

    location ~ ^/(robots\.txt|humans\.txt|favicon\.ico|\.well-known/security\.txt)$ {
        alias $one_file;
        add_header Cache-Control "public, max-age=86400";
        access_log off;
        log_not_found off;
    }

    # ... main site below
}

alias points at a file on disk, not a directory, which is exactly what I want here. access_log off keeps bot noise out of the logs. log_not_found off means a missing file returns 404 silently instead of littering error.log.