It happened with GCC. Today's GCC is actually a fork of the original, which became the "blessed" version once the forkers and RMS worked out resolved some issu

It happened with GCC. Today's GCC is actually a fork of the original, which became the "blessed" version once the forkers and RMS worked out resolved some issues that led to the fork. The unforked (for lack of a better term) GCC was set aside, and the fork became the official version.