lines.Send() only support byte delimiter
During the work on pagination for FindAllLocalBranches in
e3b1d6e5 I ran into buggy behaviour when multi
line delimiters were used in lines.Send()
. One example: if a delimiter is
twice the same character, it would unsuccessfully detect the last delimiter and
thus send invalid results to a client.
Luckily there's no call site that actually uses multi byte delimiters, which allows this change to remove support for it.
Closes: #2846 (closed)