False positive: MAC addresses

[ambroisie]

The following MAC address: F7:78:BA:76:52:F7 gets erroneously flagged as a typo for its middle BA string.

[epage]

For me, the question is whether MAC addresses in code / comments is common enough to have built-in detection support or if thats better left to defining a regex to match it in your config

[jvacek]

I wouldn't mind being able to filter out any word shorter than 2 chars

[TimTheBig]

Maybe ignore all two char words with a proceeding colon :.