Word stop when navigating text with option-key
You can choose between a few settings in System Preferences, but I don't know any way to customize them.



The standard setting treats period and colon as part of (some) words.

ASCII special characters that are part of words:


'.:_ in Standard
'_ in English (United States, Computer)


ASCII special characters that are not part of the start or end of words:


$+&lt;=&gt;^` in Standard
$+&lt;=&gt;^` in English (United States, Computer)


aa.11 and aa'11 are never single words. 11.11 and aa_11 are always single words.