Erwan Hingant <erwan.hingant@mailo.com> writes: > Hello, > > I have some troubles with regex negative lookahead. When searching > in > all directories but one (say inbox), I do the following query: > > > notmuch search folder:"/^(?!inbox)/" > As far as I know, lookaheads are not supported by POSIX regex, which is what notmuch uses. regex(7) is a bit terse, but the relevant section seems to be An atom is a regular expression enclosed in "()" (matching a match for the regular expression), an empty set of "()" (matching the null string)(!), a bracket expression (see below), '.' (matching any single character), '^' (matching the null string at the beginning of a line), '$' (matching the null string at the end of a line), a '\' followed by one of the characters "^.[$()|*+?{\" (matching that character taken as an ordinary character), a '\' followed by any other character(!) (matching that character taken as an ordinary character, as if the '\' had not been present(!)), or a single character with no other signifi‐ cance (matching that character). A '{' followed by a character other than a digit is an ordinary character, not the beginning of a bound(!). It is illegal to end an RE with '\'. I'm not sure your whole problem, but maybe regex is not the right answer here. In general they should be a last resort in notmuch, for efficiency reasons. Does "not folder:inbox" do what you want? _______________________________________________ notmuch mailing list -- notmuch@notmuchmail.org To unsubscribe send an email to notmuch-leave@notmuchmail.org