在导言区的宏缺少变量的情况下调用这段宏会直接闪退而不是报错

[SaidealemEksan]

复现场景：在空的文档的导言区放入下方的宏
<\assign|lemma|
<macro|title|body|
<with|ornament-border|1ln|ornament-hpadding|1spc|ornament-vpadding|1spc|ornament-title-style|top left|ornament-extra-color|theorem-color|ornament-shadow-color|theorem-background-color|ornament-shape|classic|
<ornamented-titled|
<with|par-sep|0fn|par-par-sep|0fn|
<surround||<if|<occurs-inside|<quote|>|body>||>|
<render-enuncaition||body>>>|
<with|color|white|font-series|bold|
<surround|||
<lemma-numbered|| title>>>>>>>

放入完成后在文档中插入引理，由于这段宏却少很多变量，例如：theorem-color等，程序会在插入引理时直接闪退，而非报错