parse.y: [DOC] Ripper.dedent_string is internal

* parse.y (parser_dedent_string): stated that Ripper.dedent_string
  is for internal use only.

[ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63127 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 383b5ef03b..b6df72fa55 100644
--- a/parse.y
+++ b/parse.y
@@ -6132,6 +6132,8 @@ heredoc_dedent(struct parser_params *p, VALUE array)
  *  call-seq:
  *    Ripper.dedent_string(input, width)   -> Integer
  *
+ *  USE OF RIPPER LIBRARY ONLY.
+ *
  *  Strips up to +width+ leading whitespaces from +input+,
  *  and returns the stripped column width.
  */