https://man7.org/linux/man-pages/man5/hgignore.5.html
hgignore(5) - Linux manual page
linuxmanual
https://go.googlesource.com/go/+/refs/tags/weekly.2011-01-12/.hgignore
.hgignore - go - Git at Google
gogit
https://mailman.nginx.org/pipermail/nginx-devel/2014-July/005531.html
[PATCH]Added .hgignore
patchadded