const std = @import("std"); pub fn needsQuotes(path: []const u8) bool {    return std.mem.findScalar(u8, path, ' ') != null;} pub fn isRepresentable(path: []const u8) bool {    if (path.len > 0 and path[0] == '"') return false;    for (path) |byte| {        if (byte == '\t' or byte == '\n' or byte == '\r') return false;    }    return !needsQuotes(path) or std.mem.findScalar(u8, path, '"') == null;} test "representable paths cannot open picker quote grammar" {    try std.testing.expect(!isRepresentable("\"leading-quote"));    try std.testing.expect(isRepresentable("embedded-\"-quote"));}