A specific cosmetic filter of the following form...
*##.selector
... will be unconditionally injected into all web pages,
whereas a cosmetic filter of the form...
##.selector
... would be injected only when uBO's DOM surveyor finds
at least one matching element in a web page.
The new specific-generic form will also be disabled when a
web page is subject to a `generichide` exception filter,
since the filter is essentially a generic one -- the only
difference from the usual generic form is that the filter
is injected unconditionally instead of through the DOM
surveyor.
Specific-generic cosmetic filters will NOT be discarded
when checking the "Ignore generic cosmetic filters"
option in the "Filter lists" pane -- since the purpose
of this option is primarily to disable the DOM surveyor.
Specific-generic cosmetic filters should be used
parcimoniously and only when using a normal specific
filter is really impractical.
Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/803
Related documentation:
- https://help.eyeo.com/en/adblockplus/how-to-write-filters#element-hiding
Related feedback/discussion:
- https://www.reddit.com/r/uBlockOrigin/comments/d6vxzj/
The `elemhide` filter option as per ABP semantic is
now supported. Previously uBO would consider `elemhide`
to be an alias of `generichide`.
The support of `elemhide` is through the convenient
conversion of `elemhide` option into existing
`generichide` option and new `specifichide` option.
The purpose of the new `specifichide` filter option
is to disable all specific cosmetic filters, i.e.
those who target a specific site.
Additionally, for convenience purpose, the filter
options `generichide`, `specifichide` and `elemhide`
can be aliased using the shorter forms `ghide`,
`shide` and `ehide` respectively.
Related issue:
- https://github.com/gorhill/uBlock/issues/127
Additionally, the extended exception filters in the
logger will be rendered with a line-through to more
easily distinguish them from non-exception ones.
Also, opportunistically converted revisited code to
ES6 syntax.
This was a TODO item:
- 07cbae66a4/src/js/cosmetic-filtering.js (L375)
µBlock.staticExtFilteringEngine.HostnameBasedDB has been
re-factored to accomodate the storing of specific cosmetic
filters.
As a result of this refactoring:
- Memory usage has been further decreased
- Performance of selector retrieval marginally
improved
- New internal representation opens the door
to use a specialized version of HNTrie, which
should further improve performance/memory
usage
- collate together specific filters with same base domain
- replace string-based hash to integer-based hash
- revisit code to benefit from ES6-specific syntax
A new filtering class has been created: "static extended filtering".
This new class is an umbrella class for more specialized filtering
engines:
- Cosmetic filtering
- Scriptlet filtering
- HTML filtering
HTML filtering is available only on platforms which support modifying
the response body on the fly, so only Firefox 57+ at the moment.
With the ability to modify the response body, HTML filtering has
been introduced: removing elements from the DOM before the source
data has been parsed by the browser.
A consequence of HTML filtering ability is to bring back script tag
filtering feature.
* refactoring assets management code
* finalizing refactoring of assets management
* various code review of new assets management code
* fix#2281
* fix#1961
* fix#1293
* fix#1275
* fix update scheduler timing logic
* forward compatibility (to be removed once 1.11+ is widespread)
* more codereview; give admins ability to specify own assets.json
* "assetKey" is more accurate than "path"
* fix group count update when building dom incrementally
* reorganize content (order, added URLs, etc.)
* ability to customize updater through advanced settings
* better spinner icon
Now splitting high-high generics in two subgroups: one group for
simple selectors, another group for complex selectors. Turns out
the great majority of high-high generics are simple selectors, and
simple selectors can be applied incrementally with DOM changes, as
opposed to complex selectors. This brings in a significant perf.
improvement in the processing of high-high generics (previously,
all high-high generic selectors were processed as one big complex
selector).
