[collectd] [PATCH] parser.y: Allow an argument list to be empty.

[Sebastian Harl]

This allows you to specify options without any or optional arguments in the
config file. This is quite useful to e.g. implement "flag" options to change
program behavior in just one way where the opposite way does not make sense or
is not possible at all.

Signed-off-by: Sebastian Harl <sh at tokkee.org>
---
 src/parser.y |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/src/parser.y b/src/parser.y
index ea6ed0a..a5fcfce 100644
--- a/src/parser.y
+++ b/src/parser.y
@@ -91,6 +91,13 @@ argument_list:
 	 $$.argument[0] = $1;
 	 $$.argument_num = 1;
 	}
+	| /* epsilon */
+	{
+	 $$.argument = malloc (sizeof (oconfig_value_t));
+	 $$.argument[0].value.string = NULL;
+	 $$.argument[0].type = OCONFIG_TYPE_STRING;
+	 $$.argument_num = 1;
+	}
 	;
 
 identifier:
-- 
1.5.1.4

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