I am attempting to visualise a random sample of Irish proverbs from a .tsv file, the Irish language uses fadas (the same as accents in French) on the vowels. Where ever they are read into my sketch they appear as a small blank square. After searching the forums I thought that to get this to work I just had to select the "all characters" option when I was creating the font but it doesn't work.
These are the characters á, ú, í, é and ó (and same on uppercase).