[PATCH v2 3/5] api-run-command.txt: talk about run_hook()

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Signed-off-by: Stephan Beyer <s-beyer@xxxxxxx>
---

	Jakub, thanks for your notes.
	I still rephrased it some more.

 Documentation/technical/api-run-command.txt |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt
index 82e9e83..13e7b63 100644
--- a/Documentation/technical/api-run-command.txt
+++ b/Documentation/technical/api-run-command.txt
@@ -52,6 +52,21 @@ Functions
 	Wait for the completion of an asynchronous function that was
 	started with start_async().
 
+`run_hook`::
+
+	Run a hook.
+	The first argument is a pathname to an index file, or NULL
+	if the hook uses the default index file or no index is needed.
+	The second argument is the name of the hook.
+	The further arguments (up to 9) correspond to the hook arguments.
+	The last argument has to be NULL to terminate the arguments list.
+	If the hook does not exist or is not executable, the return
+	value will be zero.
+	If it is executable, the hook will be executed and the exit
+	status of the hook is returned.
+	On execution, .stdout_to_stderr and .no_stdin will be set.
+	(See below.)
+
 
 Data structures
 ---------------
-- 
1.6.1.160.gecdb

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