[tex-k] Wrong \spacefactor after quote which ends in period in TeXbook
Igor Liferenko
igor.liferenko at gmail.com
Fri Aug 7 10:03:32 CEST 2020
Hi,
In the following line from texbook.tex is missing \null before right quote:
When a phrase like `\TeX\ ignores spaces after control words.' is
because the period here is not sentence-ending full stop and
in PlainTeX is done \sfcode`\.3000 and \sfcode`\'=0.
Alternatively, the following fix may be used:
When a phrase like `\TeX\ ignores spaces after control words.'\ is
(i.e., make the space after right quote a control-space)
There is a bunch of the same errors in texbook.tex and maybe elsewhere...
On the contrary, in the following line from texbook.tex the \null is redundant:
that do end with uppercase letters (e.g., `$\ldots$ launched by
NASA.\null' or
because A has \sfcode 999 and after the period it becomes 1000 and \null changes
nothing.
Regards,
Igor
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