LuaSnip is a scriptable text expansion framework and Lua-based snippet engine. It allows for the creation of reusable text templates and complex nested structures that expand into a buffer using triggers and jumpable tabstops.
The system distinguishes itself by using abstract syntax trees to trigger expansions based on structural code patterns rather than simple text matching. It features a multi-format importer capable of parsing snippet definitions from community standards such as LSP and SnipMate.
The framework covers dynamic code generation through Lua functions, regex-based capture grouping, and interactive choice nodes for cycling through text options. It also provides context-aware expansion based on file types and syntax tree positions, alongside postfix buffer transformations to wrap or alter existing text.
The engine supports lazy-loading of snippet collections from external files and directories to optimize memory usage.
