Thunderbird/Add-ons Guide 57: Difference between revisions

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simplify preface. add where to ask for help
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<big>'''Add-ons Guide for Thunderbird 57 and beyond'''</big>
<big>'''Add-ons Guide for Thunderbird 57 and beyond'''</big>


Mozilla core have disabled "legacy" add-ons (add-ons which are not based purely on WebExtensions) in Firefox 57. Because legacy add-ons are not supported from mozilla57 any more, many interfaces have been removed from Mozilla core.
'''Legacy add-ons''': Despite Mozilla core interface removals, Thunderbird 57-60 and beyond and Seamonkey will '''<u>still support</u> legacy add-ons <u>if</u> appropriate modifications are done to the add-on to adapt to the changed interfaces'''.  Core interface changes and removals have come because Mozilla core have disabled "legacy" add-ons (add-ons which are not based purely on WebExtensions) in Firefox 57.  


Despite the interface removals, Thunderbird 57-60 and beyond and Seamonkey will '''<u>still support</u> these as legacy add-ons <u>if</u> the appropriate modifications are done to the add-on to adapt to the changed interfaces'''.  
'''WebExtension''': WebExtension does not exist yet in Thunderbird. Thunderbird will be adding WebExtension support ({{bug|1396172}}) while maintaining "legacy" add-ons and hybrid add-ons.  


In addition, Thunderbird will be adding WebExtension support ({{bug|1396172}}) while maintaining "legacy" add-ons and hybrid add-ons. (Note, WebExtension in Thunderbird via {{bug|1396172}} is not yet implmented.)
'''Questions and Help''': Add-on developers can get help in the mozilla.dev.apps.thunderbird newsgroup (the traditional venue) or in maildev mailing list. (see [[Thunderbird/CommunicationChannels#If_you.27re_a_developer]] Please [[Thunderbird/CommunicationChannels#If_you.27re_a_developer|ask there]] before filing a bug report in bugzilla, because these forums have more people available to help.
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