warning while compiling: expscan.l:402: warning, rule cannot be matched [expscan.l:402](https://github.com/mpictor/StepClassLibrary/blob/master/src/express/expscan.l#L402) is the following: `<comment>\n { NEWLINE; }`
warning while compiling:
expscan.l:402: warning, rule cannot be matched
expscan.l:402 is the following:
<comment>\n { NEWLINE; }