Available Options

  Go Haskell Java JavaScript .Net Perl PHP PostgreSQL Python Ruby XRegExp
a supported
astral supported
b supported
c supported supported
canon supported
comment supported supported supported supported supported supported supported
d supported
debug supported
dotall supported supported supported supported supported supported supported
e supported
explicitcapture supported supported
global supported supported supported
i supported
ignorecase supported supported supported supported supported supported supported supported supported
javascript supported
l supported
lastStarGreedy supported
literal supported
locale supported supported
m supported
multiline supported supported supported supported supported supported supported supported
n supported
newSyntax supported
p supported supported
posix supported
q supported
rightAssoc supported
righttoleft supported
s supported
sticky supported
t supported
u supported
unicode supported supported supported
unixline supported
w supported
x supported