Option to render URLs with rel="nofollow" about markdownsharp

[GoogleCodeExporter]

we generally want to decide to nofollow based on a heuristic, e.g., is this 
link inside our network at http://stackexchange.com/sites -- or outside it?

In my opinion, nofollowing links should be done as a separate pass. I guess I 
could support "nofollow everything by default, then unfollow just the safe 
links" but either way it is a loop across all the URLs in the input with some 
custom logic that isn't really markdown specific.

Original comment by [email protected] on 12 Nov 2010 at 8:52

[GoogleCodeExporter]

Original comment by [email protected] on 12 Nov 2010 at 9:02

• Added labels: Priority-Low
• Removed labels: Priority-Medium

[GoogleCodeExporter]

Original comment by [email protected] on 12 Nov 2010 at 9:03

• Added labels: Type-Enhancement
• Removed labels: Type-Defect

[GoogleCodeExporter]

Good point about deciding whether to include the attribute based on some 
property of the link.  In fact I think that's something I would like to do for 
my app too, now you mention it.

However I'd still like to do this in a single pass, just to reduce the amount 
of string churning on the server.  I think it'd be simpler to code too.  I'll 
hook up a callback mechanism that passes out the URL to some optional external 
code in order to decide whether to mark the link as nofollow or not.

Let me know if you're interested in a patch or not.

Original comment by drewnoakes on 18 Nov 2010 at 2:53