I have started using the Micro editor:
and have created a syntax file for the gemini protocol.
Put this into ~/.config/micro/syntax/gemini.yaml and you should be good to go!
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filetype: gemini
detect:
filename: "\\.(gmi|gemini)$"
rules:
# Heading levels
- special: "^#.*"
- special: "^##.*"
- special: "^###.*"
# Link label
- type: "^=>\\s*\\S+\\s+.*"
# recolor link URL
- constant: "^=>\\s*\\S+"
# recolor the link prefix
- special: "^=>"
# Unordered lists
- identifier: "^\\*.*"
# Preformatted blocks
- preproc:
start: "^```$"
end: "^```$"
rules:
- preproc: ""
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~EOF~