multiple swap-partitions share a single heading that doesn't resize

[kaefert]

I'm using Dstat 0.7.2 included in Linux Mint 16 (~ Ubuntu 13.10)
Kernel 3.11.0-12-generic
Python 2.7.5+ (default, Sep 19 2013, 13:48:49)
[GCC 4.8.1]

The "----swap---" heading is only printed once, even though I have two swap partitions mounted, which both do get stats printed. This causes the headings to be misaligned.

----system---- ----total-cpu-usage---- --dsk/sda-----dsk/sdb-- -net/wlan0- ---paging-- ---system-- ------memory-usage----- ----swap--- ---load-avg---
     time     |usr sys idl wai hiq siq| read  writ: read  writ| recv  send|  in   out | int   csw | used  buff  cach  free| used  free| 1m   5m  15m 
11-12 23:34:52| 25   0  75   0   0   0|   0     0 :   0     0 | 270B 1560B|   0     0 | 494   446 |5451M 1444k 4309M  126M|  15G   15G:   0    40G|1.11 1.39 1.24
11-12 23:34:53| 25   0  74   1   0   0|   0     0 :   0     0 | 539B 1874B|   0     0 | 497   476 |5452M 1444k 4309M  125M|  15G   15G:   0    40G|1.10 1.38 1.24
11-12 23:34:54| 25   0  75   0   0   0|   0     0 :   0     0 | 192B  780B|   0     0 | 482   438 |5452M 1444k 4309M  125M|  15G   15G:   0    40G|1.10 1.38 1.24