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How can I follow "tag A + tag B" simultaneously?
For instance:

  • + (all questions that include windows AND python);
  • + (all questions that include linux AND mono);
  • + (all questions that include asp.net AND solr) and so on.
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Do you mean "Subscribe for email notifications"? –  Awesome Poodles May 3 '12 at 1:41
    
Closely related: meta.stackexchange.com/questions/9797/… –  Al E. May 14 '12 at 14:53

2 Answers 2

Im not 100% sure what you mean by "follow". You can choose some favorite tags, and any post containing those tags will have a yellow background (here is an explanation of all the colors).

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Alternatively you can simply search the site for questions containing those tags using the search bar at the top right corner of any screen on Stack Overflow -

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The search query for tags is simply the tag name surrounded by square brackets.

Example -

To search for and use this - [php][javascript]


If you are referring to subscribing to tags - whereby you receive emails containing recent posts containing those tags, then I do not believe that you can subscribe to multiple tags simultaneously... You can subscribe to both and then perhaps utilize the tag filters on http://stackexchange.com/

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[php][javascript] will follow questions with both tags (using AND), it there a way to follow either (ie using OR)? –  Levon May 13 '12 at 9:36
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@lev - sure you can! [tag1] [or] [tag2] - meta.stackexchange.com/a/87802/172936 –  Lix May 13 '12 at 10:02
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odd .. I am sure I had tried this before, but it works now. Thanks! –  Levon May 13 '12 at 10:06
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@lev - beware though - a little bird told me that this is not a supported feature... –  Lix May 13 '12 at 14:40
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Ah .. thanks, good to know, plus the link touches on why the search parameters entered in the box don't stick around, something I was wondering since it works with single tag searches. –  Levon May 13 '12 at 16:35

Unfortunately, Stack exchange does not provide a way for you to restrict subscription ("following") emails to questions that have specific tag combinations. You may want to make a feature request for that, since it seems like a handy feature. (I'd use it myself if I didn't lurk in low-traffic tags.)

Reference:

  1. Your email subscriptions page.
  2. The new-filter creation page.


Workarounds:

  • Use Google Alerts. For example:

    1. Go to the Google-Alert creation page.
    2. Enter a query like:
      "Linux" "Mono" site:stackoverflow.com -site:meta.stackoverflow.com
    3. Fill out the other fields to taste and create the alert.
    4. Confirm the email that Google sends.

  • You could probably make something using the Stack Exchange API.

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