A filter sounds good to me, here are some ideas from the mailing list:
http://template-toolkit.org/mail/index.html
  i18n site:mail.template-toolkit.org/pipermail/templates/
    http://mail.template-toolkit.org/pipermail/templates/2005-June/thread.html#7465
      http://mail.template-toolkit.org/pipermail/templates/2005-June/007472.html
        Catalyst::Plugin::I18N::Manual (Draft) I18N and L10N with Catalyst and Template Toolkit.

In reply to Re: i18n with Template-Toolkit by Anonymous Monk
in thread i18n with Template-Toolkit by aulusoy

Title:
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