! LaTeX3 Error: Unknown message 'unsupported-engine' for module 'fduthesis'.
For immediate help type H <return>.
...
l.71 }
如果将 \msg_new:nnn 前置, 则输出正确:
! Fatal Package fduthesis Error: The fduthesis class requires either XeTeX or
(fduthesis) LuaTeX.
(fduthesis)
(fduthesis) "pdftex" is not supported at present. You
(fduthesis) must change
(fduthesis) your typesetting engine to "xelatex" or
(fduthesis) "lualatex".
Type <return> to continue.
...
l.77 }
https://github.com/stone-zeng/fduthesis/blob/85b5688f0c20d540ed86f3ddb73da77fae3334c6/source/fduthesis.dtx#L2692-L2705
此时终端输出为
如果将
\msg_new:nnn
前置, 则输出正确:其他的
msg
的问题也相应存在, 但是由于我的 l3 和 dtx 水平都过于薄弱, 就不乱提 pr 了