[tex-k] a technical error in MFbook

胡亚捷 (Hu Yajie) 2500418497 at qq.com
Fri Oct 23 15:09:19 CEST 2020

Page C292, line -10
Change "known p-q" to "known (p-q)", because the syntax of Chapter 25
tells us that "known" applies to primary expressions and subtraction
occurs on the tertiary level of precedence.

show if known p-q: p=q else: false fi;    % produces errors
show if known (p-q): p=q else: false fi;  % true

(It's near the deadline and I still haven't gone through the whole book...)


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