reporter-dont-compact-list

reporter-dont-compact-list is a variable defined in `reporter.el'.
Its value is

nil

Documentation:
Interface variable controlling compacting of list values.
When non-nil, this must be a list of variable symbols. When a
variable containing a list value is formatted in the bug report mail
buffer, it normally is compacted so that its value fits one the fewest
number of lines. If the variable's symbol appears in this list, its
value is printed in a more verbose style, specifically, one elemental
sexp per line.

Note that this variable is not buffer-local so you should never just
`setq' it. If you want to changes its default value, you should `let'
bind it.