Find: <(li*)\b[^>]*>(.*?)</\1>
Replace: $2

Developed for eclipse but prolly useful elsewhere, put the text after 'find' in the 'find' box and the text after 'replace' in 'replace'.

Note: this example uses an html list item 'li', make sure to replace that with the tag you want to find

Grab an html tag and leave just the content

html

Regular Expression