[PATCH] Document PA_COMMAND_UNDERFLOW protocol change

[david.henningsson@xxxxxxxxxxxxx (David Henningsson)]

Signed-off-by: David Henningsson <david.henningsson at canonical.com>
---
 PROTOCOL |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/PROTOCOL b/PROTOCOL
index 6b999af..2773ca5 100644
--- a/PROTOCOL
+++ b/PROTOCOL
@@ -271,3 +271,9 @@ PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
     bool mute
     bool has_volume
     bool volume_writable
+
+## v23, implemented by >= 1.0
+
+New field in PA_COMMAND_UNDERFLOW:
+
+    int64_t index
-- 
1.7.4.1


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