Adds a reference to `TracePoint` to `binding` docs

This change adds an explicit reference to `TracePoint` in the
documentation for `binding`. Currently it only refers to the now
deprecated `Kernel#set_trace_func`. This reference is left alone for
continuity in the documentation.
[Fix GH-2079]

Co-authored-by: Brandon Weaver <baweaver@squareup.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/proc.c b/proc.c
index 32b75f7965..2f990f65e4 100644
--- a/proc.c
+++ b/proc.c
@@ -3554,7 +3554,7 @@ Init_Proc(void)
  *  possibly an iterator block that can be accessed in this context
  *  are all retained. Binding objects can be created using
  *  Kernel#binding, and are made available to the callback of
- *  Kernel#set_trace_func.
+ *  Kernel#set_trace_func and instances of TracePoint.
  *
  *  These binding objects can be passed as the second argument of the
  *  Kernel#eval method, establishing an environment for the