Combined emphasis:

  1. test test
  2. test test
  3. test test
  4. test test
  5. test test
  6. test test
  7. test test
  8. test test
  9. test test
  10. test test
  11. test test
  12. test test
  13. test test
  14. test test
  15. test test
  16. test test

Incorrect nesting:

  1. test test test
  2. test test test
  3. test test test
  4. test test test
  5. test *test test*
  6. test _test test_
  7. test *test test*
  8. test _test test_

No emphasis:

  1. test* test *test
  2. test* test *test
  3. test_ test _test
  4. test_ test _test

Middle-word emphasis (asterisks):

  1. ab
  2. ab
  3. abc
  4. ab
  5. ab
  6. abc

Middle-word emphasis (underscore):

  1. ab
  2. ab
  3. abc
  4. ab
  5. ab
  6. abc

mypreciousfile.txt

Tricky Cases

E. **Test TestTestTest

E. **Test Test Test Test