Features

• First and last element in list support [#1067]
• Add support for typed conformance tests. [#1089]
• Add syntax for escaped field selectors. [#1002]
• Add optional.unwrap() / .unwrapOpt() function [#1103]
• Cost tracking for two-variable comprehensions and bindings [#1104]

Fixes

PR #1099 enables a change in the internal variable name used for comprehension result accumulation. This change may break some tests which inspect the AST contents in text form; however, will not break any existing uses of CEL during parse, check, or evaluation.

• Improve policy compiler error message for incompatible outputs. [#1082]
• Fix partial evaluation with the comprehension folder objects [#1084]
• Introduce versioning options to all extensions [#1075]
• Fix a crash in mismatched output check for nested rules [#1086]
• improve debug output to properly quote byte strings [#1088]
• Fix two-variable comprehension pruning [#1083]
• Replace checks for valid UTF-8 in strings with go-maintained calls [#1094]
• Policy nested rule fix [#1092]
• Address non-const format string lint findings [#1096]
• Fix typos in ext/README.md [#1098]
• Add option to use inaccessible accumulator var [#1097]
• Add test cases for string.format covering various edge cases [#1101]
• Add base_config and partial_config files under restricted_destination testdata [#1106]
• Default enable using hidden accumulator name [#1099]
• Update PruneAst to support constants of optional type [#1109]

New Contributors

• @bigkevmcd made their first contribution in https://github.com/google/cel-go/pull/1067
• @hudlow made their first contribution in https://github.com/google/cel-go/pull/1088
• @dbuduev made their first contribution in https://github.com/google/cel-go/pull/1098
• @zeitgeist87 made their first contribution in https://github.com/google/cel-go/pull/1101

Full Changelog: https://github.com/google/cel-go/compare/v0.22.1...v0.23.0