META: work plan for cureent issues

[wmyrda]

Importance (low/medium/severe) and scope of required work (trivial/normal/high).

• adblock2privoxy compilation fail with GHC 8.4.3 #25
  fix compilation
  Medium - A2P still can be used with GHC 8.0, but needs to be future proof, severity would increase as time passes and older GHC would be phased out from distros
  Normal - Proposed solution seems not to severe to achieve and there are many examples titled tweak for ghc-8.4

• TODO: remove matched element conversion #24
  implement new feature
  Medium - Most elements are removed by created css files after conversion of ## rules, but some sites require that browser completely does not know existence of certain elements therefore they need to be removed prior to being feed to the client
  High - Design feature from ground up

• translated records get dot in front which has adverse effects #23
  use prepared patch to fix rules for privoxy
  Severe - Without this many false positive catches may happen
  Trivial - patch is ready for implementation

• disregarding information following $ #22
  implement new feature
  Severe - Adblock is designed to use filters on certain conditions such as ~third-party to specify whether filter should be used on third-party or first domains. Current implementation uses that filter for all conditions
  High - Requires writing similar converter as in case of ab2p-popup-filter or ab2p-handle-as-image-s but also for script, stylesheet, subdocument and others

• empty rules #21
  add exceptions for conversion of rules not leading to any host or particular pattern
  Low - workarounds are present
  Normal - Probably requires few regex additions to current converter implementation

• element hidding whitelists undesired behaviour #20
  redesign whitelist expception handling
  Low - workarounds are present & it could interfere with browsing only or rare
  Normal - Probably requires few regex additions to current converter implementation

• easylist go.*. rule breaks many sites #19
  use prepared patch to fix rules for privoxy
  Severe - Without this many false positive catches may happen
  Trivial - patch is ready for implementation

• adblock2privoxy segmentation fault #18
  make sure element hiding directory is empty before new rules are created
  Severe - typical race condition which in worst case scenario can lead to system crash
  Trivial - if exists rm -r ${css_dir}\* before any ## rules are created

• ab2p.common.css causes breakage on some sites #17

• separate ab2p-elemhide-common-filter from ab2p-elemhide-filter

• add all hosts from rules with $generichide to {-filter{ab2p-elemhide-common-filter}}

Medium - about 1% of all sites using element hiding rules may not use generic hide
Trivial/High - Above steps are trivial, but getting converter to process all $generichide rules an add them in right way required coding new feature from ground up

• version string of filter is truncated if it not composed only of digits #16
  cosmetic change to the task file
  Low - does not change any behavior of converter, just descriptive value
  Trivial - small change required

• expired rules are not used #15
  implement way for a2p to use other filtersets than only those designed for adblock (eg. adguard)
  Low - without this quite number of rules are skipped, but workaround is present
  Normal - several conditions may have to be added for accepting list other than those for adblock

• conversion errors - not abp specific #14
  related to bug 22 as it requires additional convertions currently not implemented

• /#

• #?#

• Low - cases are rare and in case of #?# undocumented, but they happen
  Normal - Few changes in regex may be needed to address this issue

• unblock rules too unspecific for certain sites #13
  duplicate of issue 17, but better describes problem

• add support pre-processor directives for filters #12
  use only filters which will be understood
  Medium - cases where several approaches are taken for specific software to handle given problem are out there and specially present in lists designed for adguard
  High - Implement feature from ground up

• css file could use new line for site specific rules #11
  implement proper :style() conversion for css files

• High - Over 10 thousands rules
  Trivial/High - trivial if only Elements=4000 is changed to Elements=1, but may be high as would require change to way in which css files are created

• Double rules on filters are too broad #10
  limit converter to generate only one rule line per record
  Medium - I would say high as it leads to creating too many broad rules, but workarounds are present
  Normal - probably requires fixes here and there

• privoxy crash due to bad filter combination #7
  simple template change, fix ready
  Severe - without fix privoxy crashes
  Trivial - patch is ready

• adblock2privoxy errors out on several records #6
  implementing new conversion methods where privoxy needs to inject javascript
  High - affects hundreds of pages which require parts of scripts to be blocked prior to being used by the browser
  High - Design feature from ground up

[essandess]

@wmyrda thanks again for compiling this helpful list. All items that can be addressed now have been, so I’m closing this and we can discuss individual issues per item.