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-rw-r--r--lib/pathname.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/pathname.rb b/lib/pathname.rb
index 7eaa82b7ce..e4ca5489ce 100644
--- a/lib/pathname.rb
+++ b/lib/pathname.rb
@@ -15,6 +15,10 @@
# == Pathname
#
# Pathname represents a pathname which locates a file in a filesystem.
+# The pathname depends on OS: Unix, Windows, etc.
+# Pathname library works with pathnames of local OS.
+# However non-Unix pathnames are supported experimentally.
+#
# It does not represent the file itself.
# A Pathname can be relative or absolute. It's not until you try to
# reference the file that it even matters whether the file exists or not.