The test suite (ran by invoking 'make' in the testsuite/ directory) fails like this:
../jade/openjade -c ../dsssl/catalog -t sgml -d expr-lang.dsl null.sgml > expr-lang.actual
diff expr-lang.actual expr-lang.expected
7c7
< (char<? #\a #\A --> #t
---
> (char<? #\a #\A --> #f
10c10
< (char<=? #\a #\A --> #t
---
> (char<=? #\a #\A --> #f
13c13
< (char>? #\a #\A --> #f
---
> (char>? #\a #\A --> #t
16c16
< (char>=? #\a #\A --> #f
---
> (char>=? #\a #\A --> #t
make: *** [Makefile:11: expr-lang.expected] Error 1