Hello, @jessica-bruno, @mkupper and All,
@mkupper, you’re right but these negative look-arounds are not intended to be used on their own but rather with a part outside the look-around(s !
Refer to the two tables below.
Copy the text of the first column in a new tab
Use the Mark dialog to get the text matched by each of these 9 regexes, in a red/orange color ( tick the Purge for each search option ) !
The results should be as below :
•---------------------•------------------------•----------------------•----------------------•-----------------------•-----------------------• | | 12345 | 12345(?=aaaaa) | 12345(?!bbbbb) | (?<=ccccc)12345 | (?<!ddddd)12345 | •---------------------•------------------------•----------------------•----------------------•-----------------------•-----------------------• | 12345aaaaa | X | x | X | | X | | 12345bbbbb | X | | | | X | | 12345zzzzz | X | | X | | X | | ccccc12345 | X | | X | X | X | | ddddd12345 | X | | X | | | | zzzzz12345 | X | | X | | X | | ccccc12345aaaaa | X | X | X | X | X | | ccccc12345bbbbb | X | | | X | X | | ccccc12345kkkkk | X | | X | X | X | | ddddd12345aaaaa | X | X | X | | | | ddddd12345bbbbb | X | | | | | | ddddd12345zzzzz | X | | X | | | | zzzzz12345aaaaa | X | X | X | | X | | zzzzz12345bbbbb | X | | | | X | | zzzzz12345zzzzz | X | | X | | X | •---------------------•------------------------•----------------------•----------------------•-----------------------•-----------------------• •---------------------•------------------------------•--------------------------------•--------------------------------•--------------------------------• | | (?<=ccccc)12345(?=aaaaa) | (?<=ccccc)12345(?!bbbbb) | (?<!ddddd)12345(?=aaaaa) | (?<!ddddd)12345(?!bbbbb) | •---------------------•------------------------------•--------------------------------•--------------------------------•--------------------------------• | 12345aaaaa | | | X | X | | 12345bbbbb | | | | | | 12345zzzzz | | | | X | | ccccc12345 | | X | | X | | ddddd12345 | | | | | | zzzzz12345 | | | | X | | ccccc12345aaaaa | X | X | X | X | | ccccc12345bbbbb | | | | | | ccccc12345kkkkk | | X | | X | | ddddd12345aaaaa | | | | | | ddddd12345bbbbb | | | | | | ddddd12345zzzzz | | | | | | zzzzz12345aaaaa | | | X | X | | zzzzz12345bbbbb | | | | | | zzzzz12345zzzzz | | | | X | •---------------------•------------------------------•--------------------------------•--------------------------------•--------------------------------•Best Regards,
guy038