Oh,, shouldn't I use / and [ ] ? OK... that's why sometimes contents are viewable or not during many regex trials. Without that, contents are viewable, but Mention feature is not working.
oh.....man. of course I made new discussions ... The posts are gone after I put the regex at Mentions+ setting. I mean posts' contents are not visible.
I deleted all files and DB. Re-installed Vanilla Forum. I tried just 3 simple steps. All the post contents disappeared. Is it because of my wrong regex?
:D glad I just misinterpreted what you said! I guess it is a problem with the regex. Could you simply change it in the settings back to \d\w and see if the content is viewable again?