TT, I think erics use of "Shadowed" is a good one. I am working on a config tiddler solution and needed to understand this well. So here is an answer in my own words. By the way with config tiddlers shadows in effect provide a default value, you can override but you can also restore. You can also interrogate the shadows content without restoring it.
- A Tiddler within a plugin or given a plugin-type is automatically a shadow tiddler and can't be deleted without deleting the plugin in which it arrived in the wiki, perhaps even already in empty.html - When filtering shadow tiddlers you may use the [all[shadows] or [is[shadow]] operators. - When edited, a copy of that shadow tiddler with the save name is created which replaces the underlying shadow tiddle,r for all intents and purposes, although the shadow tiddler still remains. These edited copies become "tiddlers" although are often using the prefix $:/ thus are also classified as system tiddlers - When filtering edited shadow tiddlers (and any other tiddler not a shadow) you may use the you may use the [all[tiddlers] or [is[tiddler]] operators - However it you want to confirm a given tiddler is ALSO a Shadow tiddler, therefor has being edited, you use the following operator [all[tiddlers+shadows]] to test if it is in both the shadow and tiddler category. - When a tiddler exists due to the editing of a shadow tiddler, deleting it "restores" the shadow tiddler. - Typically any tiddler that is part of the core or a plugin has a shadow form. Such tiddlers can be essential to the operation of tiddlywiki so it is fortunate they can be overridden but not deleted generally speaking. - If edited we can say the shadow tiddler is now a shadow of its former self or alternatively its being shadowed by the edited version. That is there now exists two tiddlers by the same name but unless specifically referenced you only see the "tiddler" not the "shadow tiddler". - If you look for a shadow tiddler that was not edited you often find it as contained within a plugin or the $:/core Regards Tony On Saturday, November 30, 2019 at 5:19:32 AM UTC+11, TiddlyTweeter wrote: > > Ciao Eric > > Thanks for .... > > The filter terminology for referring to overridden shadows *is* somewhat >> confusing, linguistically. Perhaps it might better be interpreted as >> meaning "[is[shadowed]]". Also, note the difference between "overwritten" >> and "overridden"... the first term implies a direct replacement, while the >> second term implies a prioritization of use. > > > Useful! > > The point of my post was, since I had confusion in the past, others will > be too now. > > It is not so much TW need change anything, rather that supplemental notes > on what "Shadows" are would be helpful. They are confusing to grasp, I > think. > > Best wishes > TT > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/a41ec866-3ace-4945-a666-acad56284c1a%40googlegroups.com.
