Filter with the pattern

[cyriltovena]

Right now you can only use

| pattern `foo <buzz> bar`

to extract fields/labels (e.g buzz here) but you can't use it for filtering non matching log line of that pattern.

While we can easily make the suggested pattern filtering by replacing fields with regex

|~ `foo (.*) bar

this is by far inefficient.

I suggest we introduce a new way in the language to filter with the pattern language. This will be much more efficient and less problematic with control character which has been proven to be painful in my previous hackathon.

We should be able to filter in and out with pattern. Part of the task is to suggest the two new language syntax addition.

[jeschkies]

you can't use it for filtering non matching log line of that pattern

That sounds like the syntax should be ! pattern `foo <buzz> bar` following !~.

[cyriltovena]

What would be the alternative for filtering in ?

[kolesnikovae]

After an internal discussion, we have decided to extend the syntax by introducing a new line filter operator:

|> "pattern string"

If you're using font ligatures, it's displayed as a nice arrow glyph:

And exclamation sign instead of the pipe for negation (w/o a ligature):

!> "pattern string"