hugo --quiet
ls public/files
stdout 'f1.txt'
stdout 'f2.txt'

grep 'enf1' public/files/f1.txt # en mount is last.
grep 'frf2'  public/files/f2.txt

-- hugo.toml --
disableKinds = ["taxonomy", "term"]
defaultContentLanguage = "en"
defaultContentLanguageInSubdir = true

[languages]
[languages.en]
languageName = "English"
weight = 1
[languages.fr]
languageName = "Français"
weight = 2
[module]
[[module.mounts]]
source = "static/fr"
target = "static"
lang = "fr"
[[module.mounts]]
source = "static/en"
target = "static"
lang = "en"

-- static/en/files/f1.txt --
enf1
-- static/fr/files/f1.txt --
frf1
-- static/fr/files/f2.txt --
frf2
-- layouts/home.html --
Home.