16 /// Find the level runs within a line and return them in visual order.
34     let mut runs = Vec::new();  in visual_runs()  localVariable
36     // Find consecutive level runs.  in visual_runs()
45             runs.push(start..i);  in visual_runs()
53     runs.push(start..line.end);  in visual_runs()
55     let run_count = runs.len();  in visual_runs()
57     // Re-order the odd runs.  in visual_runs()
64         // Look for the start of a sequence of consecutive runs of max_level or higher.  in visual_runs()
67             if levels[runs[seq_start].start] < max_level {  in visual_runs()
75                 if levels[runs[seq_end].start] < max_level {  in visual_runs()
81             // Reverse the runs within this sequence.  in visual_runs()
82             runs[seq_start..seq_end].reverse();  in visual_runs()
91     runs  in visual_runs()