The document https://confluence.atlassian.com/bitbucketserver053/search-for-code-in-bitbucket-server-938022411.html?utm_campaign=in-app-help&utm_medium=in-app-help&utm_source=stash suggests "All punctuation characters are removed. !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
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How do I search for $ in the Bitbucket source code?