Ligatures raise the typographical quality and thus we should retain them. However, there may be a reason to disable them, for example, in verbatim text such as the source code.
Furthermore, it's possible that searching or copying of ligatures in a PDF file would fail, which we discussed in the previous recipe.
We will now see how to disable ligatures. We will use the microtype package:
Load the
microtypepackage:\usepackage{microtype}Disable ligatures completely:
\DisableLigatures{encoding = *, family = * }If you would like to restrict that feature to a certain font, you can specify it instead, such as:
\DisableLigatures{encoding = T1, family = tt* }You may even suppress just the selected ligatures using the following command. Specify the letter that starts the ligature.
\DisableLigatures[f]{encoding = *, family = * }