This is an add-on for Anki version 2.1 that allows you to use regular expression pattern matching to search for cards in the browser and the filtered deck creation dialog. It also provides a feature that allows you to use wildcard pattern matching to specify a field name.
You can use a regex literal as a search term, which consists of a regex pattern enclosed between slashes, as follows:
/ab+c/text:/Hello\b.*world/
A regex search is case-sensitive by default. If you want to perform a regex search in a case-insensitive manner, add i flag to the end of a regex literal, as follows:
/ab+c/i
As an optional feature, you can use wildcard pattern matching to specify a field name. A character * matches zero or more of any character. Field names are handled in a case-insensitive manner.
*text*:abc- Find notes with a field whose name is Text, text 1, English Text, etc., and which contains a string abc.
This feature can also be used in combination with regex search.
*info*:/hello\b.*world/i
This feature can be disabled or the wildcard character can be changed via add-on's config dialog.
- Go to Tools > Add-ons > Select this add-on > Config
Anki's manual says:
If you want to search for something including a space or parenthesis, enclose it in quotes.
"/apple(?!\s*pie)/""* foo *:abc"
Keep this point in mind, since parentheses are often used in regular expression patterns.
This add-on conflicts with Word search and wildcard field name (2.1) add-on.