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Re: Explanations with an EQN User Guide
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From: |
Douglas McIlroy |
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Subject: |
Re: Explanations with an EQN User Guide |
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Date: |
Mon, 22 May 2023 20:04:53 -0400 |
> Basically, [if] a tab occurs within braces, it will be rejected.
Running eqn standalone, I got identical outputs from these
two inputs
.EQ
a<tab>b
.EN
.EQ
{a<tab>b}
.EN
The tab is passed to groff as \t\,
man 7 groff says \t is "uninterpreted", yet the tab
skips to a tab stop set by .ta. This leaves me
totally confused, because groff apparently ignores
\t when it doesn't come from eqn. If, as i believe,
eqn doesn't know about .ta and groff doesn't
know about eqn and normally ignores \t, what
causes the skip to happen?
Doug