• MozillaPreferences

Mozilla Preferences

The quick and dirty way to set preferences is to browse to the url about:config. It is a pretty self-explanatory gui interface.

However most users of Conkeror prefer to set preferences in their meticulously organized rc scripts, instead of lost somewhere in the mozilla profile directory. The most common function you will use to set preferences in your rc script is session_pref. The second most common is user_pref. Both are called with two arguments---the string name of the preference, and the value, the type of which depends on the preference---usually a string, a number, or a boolean. First we'll describe user_pref, so you know why you need to use in in some cases, but should prefer not to.

user_pref will cause the given preference to be saved to your profile. This is necessary in rare cases of preferences whose values are read before your rc script is loaded.

session_pref will wipe out a user-pref and set the preference in a way that it will not be saved in your profile. Debugging preference setting problems is easy when you use session_pref because you can just comment out the line in your rc and be sure that the pref will not be loaded from your profile.

Conkeror itself has a small number of preferences because it uses ordinary javascript variables to set options, when possible. Those few prefs it has usually have to be set with user_pref because their values are needed during startup before the rc is loaded. The best example is the pref conkeror.rcfile itself. It has to be set with user_pref because it stores the location of the rc script. (See Conkeror RC)

• http://kb.mozillazine.org/About:config_entries - A comprehensive list of Mozilla preferences

Small list of useful preferences

• intl.accept_languages

  • The list of languages (by their ISO639-1 language code) that the browser exposes to websites. Websites can then use this information to change the the interface language when you visit them. The first languagecode listed has highest priority. Example value: da, en-us, en (i.e. Danish, US English, International English)