The following MWE gives "false false" instead of "false true". I'm sure this used to work (18 months or more ago!) as I found it when re-processing an old document.
---start--- \setdataset [DS] [a=aaaa] \setdataset [DS] [a=] \starttext :\datasetvariable{DS}{1}{a}: \crlf :\datasetvariable{DS}{2}{a}: \crlf \doifemptyelse{\datasetvariable{DS}{1}{a}}{true}{false} \doifemptyelse{\datasetvariable{DS}{2}{a}}{true}{false} \stoptext ---end--- ConTeXt ver: 2023.09.26 18:19 LMTX There is a work-around using \doiftext instead as that seems to work okay with recalled dataset values but I thought I'd raise it. — Bruce Horrocks Hampshire, UK ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________