
Example: For the nodelist `jjss,jjss0000001,jjss0000003,jjss0000002` a regular expression was `jjss[0:0],jjss[7:1,3,2]` that led to incorrect unpacking the first host as `jjs0`. This commit fixes an adding empty range for not numeric hostnames. Here is the fixed regex for this exapmle: `jjss,jjss[7:1,3,2]` Signed-off-by: Boris Karasev <karasev.b@gmail.com> (cherry picked from commit 1967e41a71dbfd892513bb02a98fe6bb418777a4)