help: fix search with `-k` option in non-ASCII locales Keyword search in help (introduced in 497deec204d1 and a17983680f12 by Augie Fackler) tries to translate already translated strings, which results in Unicode errors in gettext when non-ASCII locale is used. Also command descriptions should be translated before searching there (thanks to FUJIWARA Katsunori for pointing this out and actual fix), (issue3482).