Function Test - Static method not match path namespace

[domenik75]

The function regex (/{function="([a-zA-Z_][a-zA-Z_0-9:])((.)){0,1}"}/) doesn't match cases like: {function="NS\Test::method('123test')"}.
I try this regex that seem to work: /{function="([a-zA-Z_][a-zA-Z_\\\\0-9:])((.)){0,1}"}/