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A configurable GitHub App which checks for potential issue duplicates using Damerau–Levenshtein distance algorithm.
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potential-duplicates bot

A simple, configurable bot searching for potential issue duplicates using Damerau–Levenshtein algorithm. The Damerau–Levenshtein distance between two words is the minimum number of operations (consisting of insertions, deletions or substitutions of a single character, or transposition of two adjacent characters) required to change one word into the other. It also detects predefined synonyms for even better results.



For more information, see the documentation for Probot.

$ npm install
$ npm start


You need to install our Github App. You can deploy our Github App manually. Then, you can create a custom configuration file at .github/potential-duplicates.yml. If this file doesn't exists, default settings will be used:

# Label name and color to set, when potential duplicates are detected
issueLabel: potential-duplicate
labelColor: cfd3d7

# If similarity is higher than this threshold, issue will be marked as duplicate
threshold: 0.60

# Comment to post when potential duplicates are detected
referenceComment: >
  Potential duplicates:
    - [#{{ number }}] {{ title }} ({{ accuracy }}%)


If you would like to run your own instance of this app, see the docs for deployment. This app requires both Issues – Read & Write and Single File – Read (.github/potential-duplicates.yml) permissions & events.

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