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At the moment, the only filter lists deemed from a "trusted source"
are uBO-specific filter lists (i.e. "uBlock filters -- ..."), and
the user's own filters from "My filters".
A new scriptlet which can only be used by filter lists from trusted
sources has been introduced: `sed.js`.
The new `sed.js` scriptlet provides the ability to perform
text-level substitutions. Usage:
example.org##+js(sed, nodeName, pattern, replacement, ...)
`nodeName`
The name of the node for which the text content must be substituted.
Valid node names can be found at:
https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeName
`pattern`
A string or regex to find in the text content of the node as the target of
substitution.
`replacement`
The replacement text. Can be omitted if the goal is to delete the text which
matches the pattern. Cannot be omitted if extra pairs of parameters have to be
used (see below).
Optionally, extra pairs of parameters to modify the behavior of the scriptlet:
`condition, pattern`
A string or regex which must be found in the text content of the node
in order for the substitution to occur.
`sedCount, n`
This will cause the scriptlet to stop after n instances of substitution. Since
a mutation oberver is used by the scriptlet, it's advised to stop it whenever
it becomes pointless. Default to zero, which means the scriptlet never stops.
`tryCount, n`
This will cause the scriptlet to stop after n instances of mutation observer
run (regardless of whether a substitution occurred). Default to zero, which
means the scriptlet never stops.
`log, 1`
This will cause the scriptlet to output information at the console, useful as
a debugging tool for filter authors. The logging ability is supported only
in the dev build of uBO.
Examples of usage:
example.com##+js(sed, script, /devtoolsDetector\.launch\(\)\;/, , sedCount, 1)
example.com##+js(sed, #text, /^Advertisement$/)
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