# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 2016-10-13 08:59:29
# Node ID 27e00e6352ceadb48c11c6f5902093a26d58f569
# Parent  733fb9f7bc92c694ba6bededaeb93206528c0bcd

dirs: add comment about _PyBytes_Resize

So readers have a canonical function to compare this code to.

diff --git a/mercurial/dirs.c b/mercurial/dirs.c
--- a/mercurial/dirs.c
+++ b/mercurial/dirs.c
@@ -59,7 +59,8 @@ static int _addpath(PyObject *dirs, PyOb
 	* "protocol" such as mutating immutable objects. But since we only
 	* mutate objects created in this function or in other well-defined
 	* locations, the references are known so these violations should go
-	* unnoticed. */
+	* unnoticed. The code for adjusting the length of a PyBytesObject is
+	* essentially a minimal version of _PyBytes_Resize. */
 	while ((pos = _finddir(cpath, pos - 1)) != -1) {
 		PyObject *val;