[Question] how to validate this regex?

[dobet]

Feature description:

I want to reg this string

^[^`~!#$%^&*+\\|{};:\"',/<>?]*$

use

expression: "this.matches('^[^`~!#$%^&*+\\|{};:\"',/<>?]*$')"

but it has " " " and " ' ". I will got

"iled to compile expression name: ERROR: <input>:1:14: Syntax error: token recognition error at: ''^[^`~!#$%!^(MISSING)&*+\\|'\n | this.matches('^[^`~!#$%^&*+\\|{};:\"',/<>?]*$')\n | .............^\nERROR: <input>:1:32: Syntax error: token recognition error at: ';'\n | this.matches('^[^`~!#$%^&*+\\|{};:\"',/<>?]*$')\n | ...............................^\nERROR: <input>:1:33: Syntax error: mismatched input ':' expecting ')'\n | this.matches('^[^`~!#$%^&*+\\|{};:\"',/<>?]*$')\n | ................................^\nERROR: <input>:1:34: Syntax error: token recognition error at: '\"',/<>?]*$')'\n | this.matches('^[^`~!#$%^&*+\\|{};:\"',/<>?]*$')\n | .................................^"

Problem it solves or use case:

Proposed implementation or solution:

Contribution:

Examples or references:

Additional context:

[dobet]

use (buf.validate.field).cel can't success， but use string.pattern can success

[rodaine]

Hey @dobet! Using regex in protovalidate requires escaping the string multiple times if used within CEL. See #198 for some options.