id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
274	Present a friendly error message for invalid caps, instead of a stack trace.	nejucomo		"I just cut'n'pasted a cap but left of the last char.

The result was a stack trace.  I had to dig around in the source and look up regular expressions to figure out why my paste didn't work.

This case should present a friendly error message in the wui that says: ""The requested link has an incorrect format.  If you pasted this from the clipboard, make sure you copied the entire link without extra line breaks.""

Also, the wapi should return an ""invalid cap"" error code, so that extensions can report to their own users the problem.

(To test this behavior, just mangle a known-working cap.)
"	defect	closed	major	1.6.0	code-frontend	0.7.0	duplicate	cap ui wui usability newurls error