| 0 | pass | pass | echo dashes |
| 1 | pass | pass | echo backslashes |
| 2 | pass | pass | echo -e backslashes |
| 3 | pass | pass | echo builtin should disallow typed args - literal |
| 4 | pass | pass | echo builtin should disallow typed args - variable |
| 5 | pass | pass | echo -en |
| 6 | pass | pass | echo -ez (invalid flag) |
| 7 | pass | pass | echo -e with embedded newline |
| 8 | pass | pass | echo -e line continuation |
| 9 | pass | pass | echo -e with C escapes |
| 10 | pass | pass | echo -e with whitespace C escapes |
| 11 | pass | pass | \0 |
| 12 | pass | pass | \c stops processing input |
| 13 | pass | pass | echo -e with hex escape |
| 14 | pass | pass | echo -e with octal escape |
| 15 | pass | pass | echo -e with 4 digit unicode escape |
| 16 | pass | pass | echo -e with 8 digit unicode escape |
| 17 | pass | pass | \0377 is the highest octal byte |
| 18 | pass | pass | \0400 is one more than the highest octal byte |
| 19 | pass | pass | \0777 is out of range |
| 20 | pass | pass | incomplete hex escape |
| 21 | pass | pass | \x |
| 22 | pass | pass | incomplete octal escape |
| 23 | pass | pass | incomplete unicode escape |
| 24 | pass | pass | \u6 |
| 25 | pass | pass | \0 \1 \8 |
| 26 | pass | pass | echo to redirected directory is an error |