Interesting question - I've had this discussion a couple of times with different SEOs. Here's my best understanding: There are actually 2 different answers - one if you are talking about Google, and one for every other search engine.
For most search engines, the "Allow" should come first. This is because the first matching pattern always wins, for the reasons Geoff stated.
But Google is different. They state:
"At a group-member level, in particular for allow
and disallow
directives, the most specific rule based on the length of the [path] entry will trump the less specific (shorter) rule. The order of precedence for rules with wildcards is undefined."
Robots.txt Specifications - Webmasters — Google Developers
So for Google, order is not important, only the specificity of the rule based on the length of the entry. But the order of precedence for rules with wildcards is undefined.
This last part is important, because your directives contain wildcards. If I'm reading this right, your particular directives:
Allow: /models/ford///page*
Disallow: /models////pageSo if it's "undefined" which directive will Google follow, if order isn't important? Fortunately, there's a simple way to find out.Google Webmaster allows you to test any robots.txt file. I created a dummy file based on your rules, In this case, your directives worked perfectly no matter what order I put them in.
| http://cyrusshepard.com/models/ford/test/test/pages | Allowed by line 2: Allow: /models/ford///page* | Allowed by line 2: Allow: /models/ford///page* |
| http://cyrusshepard.com/models/chevy/test/test/pages | Blocked by line 3: Disallow: /models////page | Blocked by line 3: Disallow: /models////page |
So, to summarize:1. Always put Allow directives first, as most search engines follow the "first rule counts" rule.2. Google doesn't care about order, but rather the specificity based on the length of the entry.3. The order of precedence for rules with wildcards is undefined.4. When in doubt, check your robots.txt file in Google Webmaster tools.Hope this helps.(sorry for the very long answer which basically says you were right all along