Why l10n tools should be editors instead of serializers

If your tool serializes internal state instead of editing files, it'll do surprising things if it encounters surprising content. Like, turn

errNotSemicolonTerminated=Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)

into

errNotSemicolonTerminated=Named character reference was not terminated by a semicolon. (Or “” should have been escaped as “amp;”.)

And that's for a string the localizer never touched.

(likely narro issue 316)