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RSE File Filters should provide more flexible expressions for filtering: 1.) Advanced file filter patterns. 1a) Regular expressions like in the Eclipse File Search dialog 1b) Description of glob patterns like in the Eclipse File Search dialog 2.) A setting to specifiy whether hidden files should be shown or not. See bug 143023 3.) The ability to invert a filter (negate it). Eclipse search supports this, e.g. Search > File, file patterns= *, !*.java, !*.html will search all files except *.java and *.html files.
There is an old proposal for "chained" filters as well that allows for many of these. The trick is migrating the current filters to a new style without causing compatibility problems.
Need to investigate - Implementation not planned yet.
There is one enhancement partially implemented - nested filters. A nested filter takes the results of its parent filter and applies itself to that -- something like a conditional "and" operation. Not sure what it means to have a different source folder for a file filter. Combined with negated filters (see 161519) this could provide some more flexibility. I'm marking the "negated filters" report as a duplicate of this since its function is contained here.
*** Bug 161519 has been marked as a duplicate of this bug. ***
One possible implementation of advanced file filters could be through a generic filter query language as suggested by bug 160113.
