Technically, a comma is not listed as a symbol that shouldn't be used, but we found that if an activity identifier has commas, Q will not find it because it uses the comma as a separator; ie. you can search for 2 or more identifiers this way.
This is now disabled in Q since commas can occur in identifiers (eg).
Note
Q is our internal (and old) API but has been used by many over the years.
This could break things with current users so we will wait and see if anyone complains.
Technically, a comma is not listed as a symbol that shouldn't be used, but we found that if an activity identifier has commas, Q will not find it because it uses the comma as a separator; ie. you can search for 2 or more identifiers this way.
This is now disabled in Q since commas can occur in identifiers (eg).
Note Q is our internal (and old) API but has been used by many over the years. This could break things with current users so we will wait and see if anyone complains.