id	summary	reporter	owner	description	type	status	priority	resolution	keywords	cc
20	Support empty strings as X values in chart	wander		"I'd like to write arbitrary strings as X values in a #chart, e.g.:

{{{
#chart;lines;points;legend;legend-position:se
Label |Y Validation ratio (\%) |
May | 4.6 |
    | 3.6 |
    | 3.7 |
Jun | 4.0 |
    | 4.5 |
    | 5.3 |
    | 4.6 |
    | 5.0 |
Jul | 4.7 |
    | 4.5 |
    | 5.2 |
    | 5.7 |
Aug | 5.0 |
    | 4.9 |
    | 4.8 |
#
}}}

Empty strings trigger a runtime error (''panic: runtime error: index out of range'').

Edit: forgot to define Label instead of X."	enhancement	new	major