Escaping '{' in string parse pattern with char lbrace does not work #17814
Description
Bug report form
- I have done a basic search of the issue tracker to find any existing issues that are similar.
- I have checked that my version is at least the latest stable release available via my installation method.
Describe the bug
Hi, when parsing strings with parse, escaping the '{' character with (char lbrace) does not work. Escaping with (char rbrace), (char pipe), etc. does indeed work.
How to reproduce
> "1234|56" | parse $'{a}(char pipe){b}'
╭───┬──────┬────╮
│ # │ a │ b │
├───┼──────┼────┤
│ 0 │ 1234 │ 56 │
╰───┴──────┴────╯
> "1234}56" | parse $'{a}(char rbrace){b}'
╭───┬──────┬────╮
│ # │ a │ b │
├───┼──────┼────┤
│ 0 │ 1234 │ 56 │
╰───┴──────┴────╯
> "1234{56" | parse $'{a}(char lbrace){b}'
╭────────────╮
│ empty list │
╰────────────╯
>
Expected behavior
Escaping '{' should work like other characters.
Configuration
| key | value |
|---|---|
| version | 0.111.0 |
| major | 0 |
| minor | 111 |
| patch | 0 |
| branch | |
| commit_hash | |
| build_os | macos-aarch64 |
| build_target | aarch64-apple-darwin |
| rust_version | rustc 1.93.1 (01f6ddf75 2026-02-11) (built from a source tarball) |
| cargo_version | cargo 1.93.0 |
| build_time | 2026-03-02 07:47:14 +00:00 |
| build_rust_channel | release |
| allocator | standard |
| features | default, mcp, network, plugin, rustls-tls, sqlite, trash-support |
| installed_plugins | custom_values 0.1.0, example 0.111.0, formats 0.111.0, gstat 0.111.0, inc 0.111.0, polars 0.111.0, query 0.111.0, stress_internals 0.111.0 |
| experimental_options | example=false, reorder-cell-paths=true, pipefail=true, enforce-runtime-annotations=false, native-clip=false |