[tex-k] Fw:spacing-related typo in "The METAFONTbook"

[胡亚捷 (Hu Yajie)]

Reposting it here.




------------------ Original ------------------
From: "胡亚捷 (Hu Yajie)"<2500418497 at qq.com>;
Date: Wed, Apr 22, 2020 08:18 PM
To: "Karl&nbsp;Berry"<karl at freefriends.org>;

Subject: spacing-related typo in "The METAFONTbook"



Here are some typos found in The METAFONTbook which don't show up in Knuth's errata:
(1) The answer to exercise 13.22 lack space around one of the "=" signs (but not in the other);
(2) The text of exercise 24.4 lack space around both "=" signs;
(3) The third "dangerous" paragraph on page 115 lack space around the ":=" sign.
I first discovered (1) during reading, and used the little regex [@"]\$?:?=\$?[@"] to find (2) and (3) in the source code. (3) probably doesn't matter since the line is crammed anyway.
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