1 files changed, 5 insertions, 0 deletions
diff --git a/dmyenc.c b/dmyenc.c
index 75b8a2da43..d00ad80a6f 100644
--- a/dmyenc.c
+++ b/dmyenc.c
@@ -1,3 +1,8 @@
+// This file is used only by ruby.
+// miniruby does not use this Init_enc. Instead, "miniinit.c" provides Init_enc, which defines only the builtin encodings.
+// Dynamically-linked ruby uses this Init_enc, which requires "enc/encdb.so" to load the builtin encodings and set up the optional encodings.
+// Statically-linked ruby does not use this Init_enc. Instead, "enc/encinit.c" (which is a generated file) defines Init_enc, which activates the encodings.
+
 #define require(name) ruby_require_internal(name, (unsigned int)sizeof(name)-1)
 int ruby_require_internal(const char *, int);