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once
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			#key : once
			#name : #ifndef XXX; #define XXX; #endif
			# --
			#ifndef ${1:__AKANTU_`(upcase (file-name-nondirectory (file-name-sans-extension (buffer-file-name))))`_`(upcase (file-name-extension (buffer-file-name)))`__}
			#define $1

			$0

			#endif /* $1 */