Question

views/devise/sessions/new.html.haml

%h2 
  = t('devise.sessions.link')

devise can’t find the translation

<span class="translation_missing" title="translation missing: ru.devise.sessions.link">Link</span> 

but

ru:
  devise:
    sessions:
      link: 'Войти'

is present in config/locales/devise.ru.yml

Answer 1

Rails merges the parsed yaml files correctly but,
when a key is used twice within the same translation file,
one of them will be replaced by the other,
the same way it would when adding an existing key value pair to a manually created hash.

example yaml file:

----
:foo: bar
:foo: foo

example code use:

require 'rubygems'
require 'yaml'
YAML::load("--- \n:foo: :bar\n:foo: :foo\n")

output:

=> {:foo=>:foo}