NUBIC/ncs_navigator_core — pull request #257 by yipdw (2013-07-10 19:18:31+00:00)
Title: Handle -x => 9xxx-9x.  #4547. (1.6.7.legacy branch)

Originally motivated by https://code.bioinformatics.northwestern.edu/redmine/issues/show/9687.
(cherry picked from commit 473b0a7518a86d8489bab112f52168f337b29151)