diff --git a/cmd/micro/initlua.go b/cmd/micro/initlua.go
index 5acb979d3..c84a442c6 100644
--- a/cmd/micro/initlua.go
+++ b/cmd/micro/initlua.go
@@ -136,6 +136,7 @@ func luaImportMicroBuffer() *lua.LTable {
 	ulua.L.SetField(pkg, "ByteOffset", luar.New(ulua.L, buffer.ByteOffset))
 	ulua.L.SetField(pkg, "Log", luar.New(ulua.L, buffer.WriteLog))
 	ulua.L.SetField(pkg, "LogBuf", luar.New(ulua.L, buffer.GetLogBuf))
+	ulua.L.SetField(pkg, "GetArg", luar.New(ulua.L, buffer.GetArg))
 
 	return pkg
 }
diff --git a/runtime/help/plugins.md b/runtime/help/plugins.md
index dc87476f1..79640ef91 100644
--- a/runtime/help/plugins.md
+++ b/runtime/help/plugins.md
@@ -283,6 +283,7 @@ The packages and functions are listed below (in Go type signatures):
 
     - `Log(s string)`: writes a string to the log buffer.
     - `LogBuf() *Buffer`: returns the log buffer.
+    - `GetArg(b *Buffer) (string, int)`: gets the most recent word (separated by ' ' only).
 * `micro/util`
     - `RuneAt(str string, idx int) string`: returns the utf8 rune at a
        given index within a string.