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latexindent.pl
Perl script to add indentation (leading horizontal space) to LaTeX files. It can modify line breaks before, during and after code blocks; it can perform text wrapping and paragraph line break removal. It can also perform string-based and regex-based substitutions/replacements. The script is customisable through its YAML interface.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I just found out this pacakge https://github.com/lassik/emacs-format-all-the-code that supports latexindent.
Other than that: It's kinda funny to still see alternative (La)TeX parsers implemented and maintained in Perl. :-) And, OMG, what gems.