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Firebug 1.6 is slowly approaching a beta phase and one of the last features we have put in a18 is related to localization. Note that Firebug is currently using more than 500 strings in its UI and these are translated into approximately 40 languages.

Even if we are always planning a string freeze in order to give Firebug translators some time to process new strings, we often end up with a few unfinished locales.

This is a problem especially for DTD entities since missing entity causes fatal error and in case of Firebug - not loading the extension at all (XUL overlay is not loaded). The problem is not that critical if the missing string comes from a *.properties file, since these are scriptable and we can handle the missing-string-exception in Javascript. The only issue is what to display in the UI instead.

From these reasons we decided to do following:

  • Don't use DTD entities
  • Use en-US as fallback locale (for missing strings)

And as a bonus (!), these changes allowed to fix Issue 907: Option to use en-US locale instead of fx default locale

So, all you need to do to always use Firebug with en-US locale, is to set
preference to true. There is no UI in Firebug for this option and so, you need to use about:config (see all prefs in Firebug).

Do you think this should be available in Firebug->Options menu?

Read further, if you interested how we implemented that.