[ruby-core:124811] [Ruby Feature#21878] More file types: DOOR, PORT, WHITEOUT

Issue #21878 has been reported by nobu (Nobuyoshi Nakada). ---------------------------------------- Feature #21878: More file types: DOOR, PORT, WHITEOUT https://bugs.ruby-lang.org/issues/21878 * Author: nobu (Nobuyoshi Nakada) * Status: Open ---------------------------------------- I found recent Python supports these file types: [S_ISDOOR](https://docs.python.org/3.14/library/stat.html#stat.S_ISDOOR) [S_ISPORT](https://docs.python.org/3.14/library/stat.html#stat.S_ISPORT) [S_ISWHT](https://docs.python.org/3.14/library/stat.html#stat.S_ISWHT) even they [return `False` always](https://github.com/python/cpython/blob/3.14/Lib/stat.py#L78-L88). What about supporting them in Ruby? -- https://bugs.ruby-lang.org/