Merge pull request #24 from sue445/add_comment

Tweak comment

Author: sue445

ruby-internal-core-rstring.go

@@ -12,7 +12,7 @@ func RstringPtr(str VALUE) *Char {
 	return (*Char)(rstringPtr(C.VALUE(str)))
 }
 
-// rstringPtr calls `RSTRING_PTR` in C
+// rstringPtr calls `RSTRING_PTR` in C. (for internal use within package)
 func rstringPtr(str C.VALUE) *C.char {
 	return C.RSTRING_PTR(str)
 }
@@ -22,7 +22,7 @@ func RstringLenint(str VALUE) Int {
 	return Int(rstringLenint(C.VALUE(str)))
 }
 
-// rstringLenint calls `RSTRING_LENINT` in C
+// rstringLenint calls `RSTRING_LENINT` in C. (for internal use within package)
 func rstringLenint(str C.VALUE) C.int {
 	return C.RSTRING_LENINT(str)
 }

ruby-internal-intern-string.go

@@ -12,7 +12,7 @@ func RbUtf8StrNew(str *Char, len Long) VALUE {
 	return VALUE(rbUtf8StrNew((*C.char)(str), C.long(len)))
 }
 
-// rbUtf8StrNew calls `rb_utf8_str_new` in C
+// rbUtf8StrNew calls `rb_utf8_str_new` in C. (for internal use within package)
 func rbUtf8StrNew(str *C.char, len C.long) C.VALUE {
 	return C.rb_utf8_str_new(str, len)
 }