Calvin S is a box-drawing alphabet built from Unicode line characters, the kind a text-art generator renders banner text in. This converts any text into it, and into BlackboardBold, as you type.
The same converter is a Go library and a command-line filter — echo "Hello, World!" | calvin — so it can label terminal output, README headings or commit messages. This page is it compiled to WebAssembly.
Source code: github.com/0magnet/calvin. More Go and WebAssembly projects: magnetosphere.net/software.
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