Currently my LaTeX font (CMU Serif) only gives me the common ligatures (ie: fi, ff, fl, ffi, and ffl).

But I want the discretionary ligatures to appear in my file (ie: fb, st, ct, tt, Th, and many others).

I have tried \setmainfont[Ligatures = Discretionary]{CMU Serif} with package fontspec, but it doesn't seem working.

Any ideas?

If possible, please give me the code with your answer. Thanks.

Currently my LaTeX font (CMU Serif) only gives me the common ligatures (ie: fi, ff, fl, ffi, and ffl).

But I want the discretionary ligatures to appear in my file (ie: fb, fj, st, ct, tt, Th, and many others).

I have tried \setmainfont[Ligatures = Discretionary]{CMU Serif} with package fontspec, but it doesn't seem working.

Any ideas?

If possible, please give me the code with your answer. Thanks.