LaurentGomila/SFML — comment on commit 5bae08a2d8d0dba34268150d96071a4546ab49c5
File: include/SFML/Graphics/StarShape.hpp line 117
By retep998:

"Point" is a noun adjunct.
According to Wikipedia "Noun adjuncts were traditionally mostly singular".
Recently, UK English is beginning to use the plural form more often, however this is contrary to standard English, American English, and global English, but not necessarily to broken English.