PCRE support (lookaround assertions) in secret redaction

[mikenerone]

Dupe Check

• [X] I have searched Warp feature requests and there are no duplicates

Describe the solution you'd like?

The secret redaction feature should support PCRE-style expressions (i.e. widely supported Perl-Compatible Regular Expressions), particularly lookaround assertions, in order to support cases where secret output is only identifiable by surrounding context. As a simple example, one might frequently have JSON output with a password key, like:

...
    "password": "RaNdOM*ChaRaCtErS",
...

PCRE support would allow us to use a pattern with lookbehind and lookahead assertions like this (an admittedly very strict approach to keep the example simple):

(?<="password": ")[^"]*(?=")

...which would produce the following output, which is ideal IMO:

...
    "password": "*****************",
...

Is your feature request related to a problem? Please describe.

Right now, the closest we can get to that ideal output is with a pattern like this:

"password": "[^"]*"

However, the much less ideal result of this is that the entire match gets hidden like

...
    *********** *******************,
...

Additional context

There's a similar, but narrower, feature request in #3636. I believe the PCRE support I'm describing has several advantages:

1. It does address #3636 as well.
2. It's more flexible, able to address more complex use cases we can't even exhaustively think of. Besides lookaround assertions, PCRE would bring a host of other capabilities.
3. I'm guessing it's much easier to implement, as it probably simply involves using a different regex library than the one in Rust's standard library (I'm not a Rust person, so I won't make any specific suggestions, but some googling does turn up multiple options).

How important is this feature to you?

4

Warp Internal (ignore) - linear-label:39cc6478-1249-4ee7-950b-c428edfeecd1

None

[dannyneira]

Thanks for this feature request!

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