Short answers, pulled from the story.
Pierre Boullier, a researcher at INRIA in France, created the SYNTAX compiler-generation system. He developed the system quietly without seeking global fame while his contemporaries gained recognition.
SYNTAX became free software under the CeCILL license on the 1st of January 2007. This release occurred after the system had already proven its worth in high-stakes operational environments.
The team developed the first tool-translator for the Ada language between 1978 and 1981. This project included Knut Ripken and followed meta-compilation methods to build the compiler.
Version 6.0 beta of SYNTAX introduced the Earley parser generator for non-deterministic parsing. This update enabled the system to handle context-sensitive formalisms such as TAG, RCG, and LFG.
Pierre Boullier and Martin Jourdan developed the error recovery algorithm in SYNTAX. This algorithm allows the system to delete extra characters, insert missing tokens, or permute characters to restore input integrity.