ahmadsamir added a comment.
FTR; in one of my inline comments I said: > And I found that: > > - {,3} in QRegExp is equivalent to {0,3} > - {,3} in QRegularExpression is equivalent to {1,3} The second part is actually wrong (as I was told by dfaure who was told by upstream QRegularExpression author); in QRegularExpression {,3} would be treated as a literal string, you must specify the first number before "," in {} expressions; so e.g.: {0,3} {1,3} {2,3} It's explained much better by upstream, see https://codereview.qt-project.org/c/qt/qtbase/+/285293 REPOSITORY R270 KCodecs REVISION DETAIL https://phabricator.kde.org/D26123 To: ahmadsamir, #frameworks, dfaure, mlaurent, vkrause Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns