Use regex to match badwords

[nathanaelhoun]

Summary

Use regex to match badwords.

The regex is build on configuration change and then use for filter each post.

• The plugin can detect multi-word badwords (Breaking changes : the word list is now comma-separated)
• The plugin now detect badwords even with punctuation
• Default bad word list is updated to add more multi-word bad words and use regex
• README.md updated

Ticket Link

Closes #20 and closes #22

[codecov-commenter]

Codecov Report

Merging #24 into master will increase coverage by 9.05%.
The diff coverage is 69.56%.

@@            Coverage Diff             @@
##           master      #24      +/-   ##
==========================================
+ Coverage   39.02%   48.07%   +9.05%     
==========================================
  Files           3        3              
  Lines          41       52      +11     
==========================================
+ Hits           16       25       +9     
- Misses         22       24       +2     
  Partials        3        3              

Impacted Files	Coverage Δ
server/configuration.go	32.25% <58.33%> (+18.62%)	⬆️
server/plugin.go	75.00% <81.81%> (+2.77%)	⬆️

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[hanzei]

LGMT 👍

[levb]

LGTM, with a nit.

[levb]

@nathanaelhoun thank you for this meaningful improvement. Do you mind fixing my nit comment, if you agree with it? Otherwise, LGTM. @DHaussermann will you have the cycles to test this, or should we consider the new unit tests sufficient?

[DHaussermann]

Yes, I can take a quick look once changes are completed.

[nathanaelhoun]

@levb Thanks! Agree with you, so I applied it.

@DHaussermann You can test this :-)

[DHaussermann]

Tested and passed

• Regex match solves both issues as expected
• Can now filter words that contain a space like "bad word" with no impact on the individual word
• Tested basic ways of circumventing filter:
  • add ! and other punctuation
  • add dash or other special char at the end
  • encase the word in a comment block
• Users will no longer side-step the filter naturally by punctuating words
• No issues found.

LGTM!

Thanks @nathanaelhoun Much appreciated. You've added a huge amount of value by making this change!