Regex group is matching quotes when I don't want it to -

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i have regular expression:

"([^"\\]|\\.)*"|(\s+)

regular expression visualization

debuggex demo

but problem is, when have input "foo" , use matcher go through groups, first group finds "foo" when want foo. doing wrong?

edit:

i'm using java , fixed it

"((?:[^"\\]|\\.)*)"|(\s+)

regular expression visualization

debuggex demo

the first capturing group wasn't including * whole string. enclosed within capturing group , made inner existing 1 non capturing group.

edit: no... it's working in online regex debuggers not in program...

capture contents of double quoted literal pattern (branch 1) , if matched grab it.

also, consider unrolling pattern:

 "([^"\\]*(?:\\.[^\\"]*)*)"|(\s+)

in java:

string pat = "\"([^\"\\\\]*(?:\\\\.[^\\\\\"]*)*)\"|(\\s+)";

note patterns (a|b)* cause stack overflow issue in java, that's why unrolled version preferable.


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