* <<H13.0990>> Regex to match Org tags

/:\w+(?=:)/g

For use with grep, the -P flag is needed to get the lookahead [ 
(?=...) ] to work. The command line looks like this:

$ grep -P ':w+(?=:)' filename

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©2017 Adam C. Moore (LÆMEUR) <adam@laemeur.com>