Reproduction steps

1. Input (?<=^(?:\s{4})*)\s{4} in the search bar.
2. See the error.

Current vs. Expected behavior

• Current Behavior: Error compiling regex: Look-behind assertion without constant size.
• Expected Behavior: Every sequence of four spaces starting from the beginning of the line should be selected, as it is the case in VSCode.

Zed version and system specs

Zed: v0.225.9+stable (Zed)
OS: Linux Wayland cachyos unknown
Memory: 7.1 GiB
Architecture: x86_64
GPU: AMD Radeon Graphics (RADV RENOIR) || radv || Mesa 25.3.6-arch2.2

Attach Zed log file

Relevant Zed settings

Relevant Keymap

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None