cont.c: append to continuations doc [ci skip]

* cont.c (rb_callcc): [DOC] append continuations example accros
  methods.  [Fix GH-1026]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51906 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/cont.c b/cont.c
index 774a026bd5..ba72fd5990 100644
--- a/cont.c
+++ b/cont.c
@@ -893,6 +893,24 @@ cont_restore_0(rb_context_t *cont, VALUE *addr_in_prev_frame)
  *     Ron
  *     Max
  *
+ *  Also you can call callcc in other methods:
+ *
+ *     require "continuation"
+ *
+ *     def g
+ *       arr = [ "Freddie", "Herbie", "Ron", "Max", "Ringo" ]
+ *       cc = callcc { |cc| cc }
+ *       puts arr.shift
+ *       return cc, arr.size
+ *     end
+ *
+ *     def f
+ *       c, size = g
+ *       c.call(c) if size > 1
+ *     end
+ *
+ *     f
+ *
  *  This (somewhat contrived) example allows the inner loop to abandon
  *  processing early:
  *