now support partial test with phony..
remove check for the quotation ending
remove extra_quot seems to succeed
clean the stack trace
tweak
start up for testing lex
1. remove stack, clean up
2. unify dirquotation with quotation
simplify handle_quot
clean
clean up for expand_fun
clean a bit, ready for switch
lexer change, not finished yet
everything works fine except unitest
bugs need to be fixed and regression test needs to be added