Repository: JuliaLang/julia
File: base/loading.jl (Julia)

Code before:
    if isdir(env)
        project_file = locate_project_file(env)
    elseif basename(env) in project_names && isfile_casesensitive(env)
        project_file = env
    else
        project_file = false
    end
    if cache !== nothing
        cache.env_project_file[env] = project_file
    end
    return project_file
    end
end

function base_project(project_file)
    home_dir = abspath(homedir())
    project_dir = abspath(dirname(project_file))
    current_dir = project_dir

    debug = get(ENV, "JULIA_DEBUG_LOADING_WORKSPACE", nothing) == "1"
    debug && println("DEBUG: base_project called with project_file: ", project_file)
    debug && println("DEBUG: home_dir: ", home_dir)
    debug && println("DEBUG: project_dir: ", project_dir)

    while true
        parent_dir = abspath(joinpath(current_dir, ".."))
        debug && println("DEBUG: Checking parent_dir: ", parent_dir)
        # Stop if we've reached root
        if parent_dir == current_dir
            debug && println("DEBUG: Reached root, returning nothing")
            return nothing
        end
        # Stop if we've gone above the home directory
        if !startswith(current_dir, home_dir)
            debug && println("DEBUG: Gone above home directory, returning nothing")
            return nothing
        end

        base_project_file = env_project_file(parent_dir)
        debug && println("DEBUG: base_project_file: ", base_project_file)
        if base_project_file isa String
            d = parsed_toml(base_project_file)
            workspace = get(d, "workspace", nothing)::Union{Dict{String, Any}, Nothing}
            debug && println("DEBUG: workspace: ", workspace)
            if workspace !== nothing
                projects = get(workspace, "projects", nothing)::Union{Vector{String}, Nothing, String}
                debug && println("DEBUG: projects: ", projects)
                if projects isa Vector
                    # Check if any project in the workspace matches the original project
                    workspace_root = dirname(base_project_file)
                    debug && println("DEBUG: workspace_root: ", workspace_root)

Review comment (suggestion):
`abspath joinpath ..` is not a string operation, and will not terminate this loop correctly. you must use dirname

Code after:
    if isdir(env)
        project_file = locate_project_file(env)
    elseif basename(env) in project_names && isfile_casesensitive(env)
        project_file = env
    else
        project_file = false
    end
    if cache !== nothing
        cache.env_project_file[env] = project_file
    end
    return project_file
    end
end

function base_project(project_file)
    home_dir = abspath(homedir())
    project_dir = abspath(dirname(project_file))
    current_dir = project_dir
    # Only stop at home boundary if we started under home
    started_in_home = startswith(project_dir, home_dir)

    while true
        parent_dir = dirname(current_dir)
        # Stop if we've reached root
        if parent_dir == current_dir
            return nothing
        end
        # Stop if we started in home and have now left it
        if started_in_home && !startswith(parent_dir, home_dir)
            return nothing
        end

        base_project_file = env_project_file(parent_dir)
        if base_project_file isa String
            d = parsed_toml(base_project_file)
            workspace = get(d, "workspace", nothing)::Union{Dict{String, Any}, Nothing}
            if workspace !== nothing
                projects = get(workspace, "projects", nothing)::Union{Vector{String}, Nothing, String}
                if projects isa Vector
                    # Check if any project in the workspace matches the original project
                    workspace_root = dirname(base_project_file)
                    for project in projects
                        project_path = joinpath(workspace_root, project)
                        if isdir(project_path)
                            if samefile(project_path, project_dir)
                                return base_project_file
                            end
                        end
                    end
                end
            end