I am trying to use a negative lookbehind assertion in a regex “Find” in the editor. Specifically “(?<!^)\s”, that is to say “a whitespace character that is not preceded by the beginning of a line”. The editor responds with “Invalid regular expression: /(?<!^)\s/: Invalid group”. This leads me to assume that either Atom does not support lookaround assertions, or uses some other syntax that I’m not aware of.
Can someone either confirm that lookaround assertions are unsupported, or point me towards the correct syntax please? Google searches have been fruitless.