Using Isabelle and the theories LaTeXsugar OptionalSugar Archimedean_Field
where the latex documentation block contain
text " ... @{class floor_ceiling} ... "
when running isabelle build -d . S
the process fail. The file ROOT
contain
session "S" = "HOL" +
options [document = pdf, document_output = "generated"]
theories
S
document_files
build.sh
where the wiki direction of was followed.