id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
34000	"Fix numberformat.py ""string index out of range"" when null"	Jimmy Angelakos	Jimmy Angelakos	"When:
{{{
if str_number[0] == ""-""
}}}
encounters a number field that's null when formatting for the admin list_display this causes an 
{{{
IndexError: string index out of range
}}}

I can attach the proposed fix here, or open a pull request on GitHub if you like?"	Bug	closed	Utilities	4.1	Normal	fixed		Graham Coster	Ready for checkin	1	0	0	0	1	0