Problem: If we switch to french in an environment file:
\startenvironment env \useencoding[ffr] \mainlanguage[fr] \stopenvironment
Then, there is no space before ; and :
\environment env \starttext bla: bla? bla! bla; bla. \stoptext
Workaround: Put this at the end of the environment:
\unprotect \def\reactivateLostActivations{\catcode`:=\@@active \catcode`;=\@@active} \appendtoks\reactivateLostActivations\to\everystarttext \protect
Proposed Solution HH (in kernel):
\appendtoks \enablelanguagespecifics[\currentlanguage]% \to \everystarttext