In the PDF version of the snippet above, the "fl" letters of "flag"
are missing. I think this is probably because they are being
converted to a ligatured glyph, and then not displaying. Anyone
know how to prevent this from happening?
If I understand correctly, it is pdfTeX issue.
In my environment, after full make doc,
build/Documentation/snippets.texi2pdf.log shows the following:
```
pdfTeX warning: pdfetex (file
/usr/share/texmf-dist/fonts/type1/public/tex-gyre
/qcsr.pfb): glyph `f_i' undefined