Make sure rdm is active

linux

• TBD

windows

• It currently appears as if RTags' support for Windows was broken;
  • https://github.com/Andersbakken/rtags/issues/770
  • https://github.com/Andersbakken/rtags/issues/1202

macOS

• via homebrew

  $ brew services start rtags
  ==> Successfully started `rtags` (label: homebrew.mxcl.rtags)
  
  $ brew services list
  Name           Status  User Plist
  [..]
  rtags          started till /Users/till/Library/LaunchAgents/homebrew.mxcl.rtags.plist
  [..]

• via launch-control directly

  $ launchctrl start /Users/till/Library/LaunchAgents/homebrew.mxcl.rtags.plist

  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  <plist version="1.0">
  <dict>
    <key>Label</key>
    <string>homebrew.mxcl.rtags</string>
    <key>ProgramArguments</key>
    <array>
      <string>/usr/local/Cellar/rtags/2.14_1/bin/rdm</string>
      <string>--verbose</string>
      <string>--launchd</string>
      <string>--inactivity-timeout=300</string>
      <string>--log-file=/usr/local/var/log/rtags.log</string>
    </array>
    <key>Sockets</key>
    <dict>
      <key>Listener</key>
      <dict>
        <key>SockPathName</key>
        <string>/Users/till/.rdm</string>
      </dict>
    </dict>
  </dict>
  </plist>