string.c: doc for [Feature #13712]

* string.c (rb_str_start_with): [DOC] start_with? example with
  regexp.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/string.c b/string.c
index 3f3432fe4a..3bd6c74b35 100644
--- a/string.c
+++ b/string.c
@@ -9611,8 +9611,10 @@ rb_str_rpartition(VALUE str, VALUE sep)
  *     str.start_with?([prefixes]+)   -> true or false
  *
  *  Returns true if +str+ starts with one of the +prefixes+ given.
+ *  Each +prefixes+ should be a String or a Regexp.
  *
  *    "hello".start_with?("hell")               #=> true
+ *    "hello".start_with?(/H/i)                 #=> true
  *
  *    # returns true if one of the prefixes matches.
  *    "hello".start_with?("heaven", "hell")     #=> true