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RiscLua version history
Notes on the sources
Lua evolved from a data-entry language devised for PETROBRAS, the Brazilian oil company in the early 1990s. Its keynote has been simplicity. The term Lua refers to a C library and to a programming language which the library implements. Both aspects have been designed for portability, extendibility and embeddability

RiscLua is a dialect of Lua for RISC OS, which can be downloaded from this site. The sources can also be downloaded.

By loading the riscos library the interpreter is extended with facilities for using software interrupts. The syntax resembles that of BBC BASIC's DIM, !, ?, $ and SYS. In consequence RiscLua can be used to write wimp programs. Other dynamically loadable libraries are available: for pattern matching, lpeg, and for fixed point arbitrary size arithmetic, bc.