Zsh-like globs produce parse error – multiple issues in Zed, nvim-treesitter, emacs, etc

[abghim]

I came across this Zed issue recently (51555). The example below is taken directly from that issue.

Parse Bug

Zsh-like globs (line 4 in the following code) produce an incorrect parse tree.

env_loader_loop() {
    local -a files

    files=("$SRC_CFG_DIR"/*.sh(N))

    if ((${#files[@]} == 0)); then
        msg --warn "no *.sh files found in '$SRC_CFG_DIR'"
        return 0
    fi
}

This produces

(program
  (function_definition
    name: (word)
    body: (compound_statement
      (declaration_command
        (word)
        (variable_name))
      (variable_assignment
        name: (variable_name)
        value: (array
          (concatenation
            (string
              (simple_expansion
                (variable_name)))
            (word)
            (ERROR
              (word))
            (expansion
              (subscript
                name: (variable_name)
                index: (word))))
          (word)
          (number)))
      (ERROR)
      (command
        name: (command_name
          (word)))
      (command
        name: (command_name
          (word))
        argument: (word)
        argument: (string
          (string_content)
          (simple_expansion
            (variable_name))
          (string_content)))
      (command
        name: (command_name
          (word))
        argument: (number))
      (command
        name: (command_name
          (word))))))

I totally understand if the devs are reluctant to have this a priority – this is, after all, the bash-compatible parser and not for zsh. I still decided to open this issue because many programs that depend critically on tree-sitter see seriously broken parses in zsh config files and scripts.