Tweak linebreaks to keep long expression together.

Add a linebreak after a 'then' to keep the ternary expression that follows on a
single line.

Author: steve-downey

source/ranges.tex

@@ -5900,8 +5900,8 @@
 
 \item
 Otherwise, if \tcode{T} is a specialization of
-\tcode{optional} and \tcode{T} models \tcode{view},
-then \tcode{(static_cast<D>(F) == D() ? ((void)E, T()) : \placeholdernc{decay-copy}(E))}.
+\tcode{optional} and \tcode{T} models \tcode{view}, then \linebreak{}
+\tcode{(static_cast<D>(F) == D() ? ((void)E, T()) : \placeholdernc{decay-copy}(E))}.
 \item
 Otherwise, if \tcode{T} models
 \libconcept{random_access_range} and \libconcept{sized_range}
@@ -6384,11 +6384,10 @@
 then \tcode{((void)F, \exposidnc{decay-copy}(E))},
 except that the evaluations of \tcode{E} and \tcode{F}
 are indeterminately sequenced.
-
 \item
 Otherwise, if \tcode{T} is a specialization of \tcode{optional}
-and \tcode{T} models \tcode{view},
-then \tcode{(static_cast<D>(F) == D() ? \placeholdernc{decay-copy}(E) : ((void)E, T()))}.
+and \tcode{T} models \tcode{view}, then \linebreak{}
+\tcode{(static_cast<D>(F) == D() ? \placeholdernc{decay-copy}(E) : ((void)E, T()))}.
 \item
 Otherwise, if \tcode{T} models
 \libconcept{random_access_range} and \libconcept{sized_range}