different used regex-expressions to find html tags in a text
- separate pro-, pri- and post- expression parts in
() -
?<=indicates characters at the beginning of the search -
?=the end of the search -
|is OR -
?used for not greedy expression -
(.*?)any characters in expression -
[\\u10000-\\uEFFFF]find all UTF-16 character encodings (includes a-z, the Chinese and Greek alphabet etc.)