Unable to add metric with a name that contains % symbol to a dashboard

[LeonidVasilyev]

I'm using Graphite version 0.9.12 hosted on Ubuntu Server 14.04.
Metric example: vstest_executionengine_x86.System.CPU_Usage-%
Following error is logged to a console:

Uncaught URIError: URI malformed
    (anonymous function) @ ext-base.js:7
    Ext.apply.each @ ext-base.js:7
    Ext.apply.urlDecode @ ext-base.js:7
    graphAreaToggle @ dashboard.js:918
    Ext.grid.GridPanel.listeners.rowclick @ dashboard.js:304
    h.Event.fire @ ext-all.js:7
    h.Observable.fireEvent @ ext-all.js:7
    Ext.grid.GridView.Ext.extend.processEvent @ ext-all.js:11
    Ext.grid.GridPanel.Ext.extend.processEvent @ ext-all.js:11
    Ext.grid.GridPanel.Ext.extend.onClick @ ext-all.js:11
    J @ ext-all.js:7

[obfuscurity]

That's an invalid character for metric names. Better to use something like pct.

[LeonidVasilyev]

@obfuscurity strange that it works fine in Graph Composer. Is it documented somewhere which characters are valid and which are not?
I use Metrics.NET library which use this notation by default

[obfuscurity]

Hmm, that's unexpected. Sorry, I'll reopen this so we can investigate further.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.