Update of bug #67416 (group groff):
Status: None => Rejected
Assigned to: None => gbranden
Open/Closed: Open => Closed
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Follow-up Comment #1:
It is not mandatory to emplace an input line continuation escape sequence
after an opening brace escape sequences, and not necessarily incorrect to omit
one.
Let's have a look at those in context.
$ grep -C3 '\\{$' doc/ms.ms.in doc/ms.ms.in
doc/ms.ms.in-is called.
doc/ms.ms.in-.
doc/ms.ms.in-.
doc/ms.ms.in:.if n \{
doc/ms.ms.in-. br
doc/ms.ms.in-. ne 12v
doc/ms.ms.in-.\}
--
doc/ms.ms.in-p ~ = ~ q sqrt { 1 + ~ ( x / q sup 2 ) }
doc/ms.ms.in-.EN
doc/ms.ms.in-.\}
doc/ms.ms.in:.el \{
doc/ms.ms.in-.ce
doc/ms.ms.in-.B "[Equation not rendered on terminal output device.]"
doc/ms.ms.in-.\}
--
doc/ms.ms.in-circle "output";
doc/ms.ms.in-.PE
doc/ms.ms.in-.\}
doc/ms.ms.in:.el \{
doc/ms.ms.in-.ce
doc/ms.ms.in-.B "[Picture not rendered on terminal output device.]"
doc/ms.ms.in-.\}
--
doc/ms.ms.in-is called.
doc/ms.ms.in-.
doc/ms.ms.in-.
doc/ms.ms.in:.if n \{
doc/ms.ms.in-. br
doc/ms.ms.in-. ne 12v
doc/ms.ms.in-.\}
--
doc/ms.ms.in-p ~ = ~ q sqrt { 1 + ~ ( x / q sup 2 ) }
doc/ms.ms.in-.EN
doc/ms.ms.in-.\}
doc/ms.ms.in:.el \{
doc/ms.ms.in-.ce
doc/ms.ms.in-.B "[Equation not rendered on terminal output device.]"
doc/ms.ms.in-.\}
--
doc/ms.ms.in-circle "output";
doc/ms.ms.in-.PE
doc/ms.ms.in-.\}
doc/ms.ms.in:.el \{
doc/ms.ms.in-.ce
doc/ms.ms.in-.B "[Picture not rendered on terminal output device.]"
doc/ms.ms.in-.\}
In all of these cases, the next instruction given to the formatter is a (line)
break, either explicitly (`br`) or implicitly (`ce`).
_grep_ is in inadequate tool to decide valid versus erroneous inputs in the
_roff_ language. You have to understand the context and apply your
understanding.
Closing as rejected.
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<https://savannah.gnu.org/bugs/?67416>
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