if {[file extension $fileName] ne ".eagle"} then {
    return false
  }

  set rootName [file rootname [file tail $fileName]]

  if {$rootName eq "keyRing" || \
      [string match "keyRing.*" $rootName]} then {
      [string match "keyRing*" $rootName]} then {
    return true
  }

  return false
}

proc checkAndMatchKeyFile { varName {keyFile ""} } {