This post will probably be of interest only to the (rather small number of) people who use LaTeX to typeset Yolŋu Matha. Yolŋu Matha uses a symbol for the glottal stop which is basically an apostrophe ‘ without smart quotes turned on (it dates from the days before smart quotes). These days there is a small movement amongst Yolŋu typesetters to distinguish quotation marks from the glottal. This turns out to be surprisingly hard to do in LaTeX. Prime symbols won’t work, the verbatim environment doesn’t work, the IPA primary stress mark doesn’t work. What does look ok, however, is the tipa vertical bar accent with some space fudging.
{\textipa{\hspace{-1.5pt}\textvbaraccent{}\hspace{-1.5pt}}}
to be precise.