When the column name includes sign, C3 cannot tell the difference between signs

[LuqiYan]

C3 Version: v0.4.11
Browsers: Chrome(Version 50.0.2661.94 (64-bit)) Safari(Version 9.1)
*Bug: * One column name is with '+' and the other is '-', when I only select 'data+' from legend, it will highlight both.

[ffflabs]

Please, try to work around this behavior by adding other strings to the column names. For example, adding an empty string may force C3 to cast the label as such, whereas in your case it might be evaluating it.

[kt3k]

The fix is released in v0.5.2.