Project Summary
Geiser is a generic Emacs/Scheme interaction mode, featuring an enhanced REPL and a set of minor modes improving Emacs' basic scheme major mode.
The main functionalities provided are:
- Evaluation of forms in the namespace of the current module.
- Macro expansion.
- File/module loading.
- Namespace-aware identifier completion (including local bindings, names visible in the current module, and module names).
- Autodoc: the echo area shows information about the signature of the procedure/macro around point automatically.
- Jump to definition of identifier at point.
- Access to documentation (including docstrings when the implementation provides it).
- Listings of identifiers exported by a given module.
- Rudimentary support for debugging
Supports Guile and Racket
In a Nutshell, Geiser...
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has a well established, mature codebase
maintained by a small development team
with decreasing Y-O-Y commits -
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took an estimated 2 years of effort (COCOMO model)
starting with its first commit in February, 2009
ending with its most recent commit 3 months ago
Quick Reference
BSD 4-clause (University of California-Specific)
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryNov 11 2025 — Dec 11 2025
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12 Month SummaryDec 11 2024 — Dec 11 2025
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