Regex not compiling

[gopherbot]

by linuxhacker100:

I am working with NZB files. The regex is supposed to parse a subject line.

What steps will reproduce the problem?

Add this line to your program. p := regexp.MustCompile(`"(.*?)".*? yEnc
\((.*?)\)`)

What is the expected output? What do you see instead?

When I run the program I get:

user@host:~/sandbox/nzb$ 6g regexTest.go && 6l regexTest.6
user@host:~/sandbox/nzb$ ./6.out
regexp: compiling " "(.*?)".*? yEnc \((.*?)\) ":  unmatched '('
panic PC=0x7fe8404b5f28
regexp·MustCompile+0xbb /home/stephen/sandbox/go/src/pkg/regexp/regexp.go:677
        regexp·MustCompile(0x4600f8, 0x0, 0x19, 0x0, 0x1, ...)
main·main+0x23 /home/stephen/sandbox/nzb/regexTest.go:7
        main·main()
mainstart+0xf /home/stephen/sandbox/go/src/pkg/runtime/amd64/asm.s:54
        mainstart()
goexit /home/stephen/sandbox/go/src/pkg/runtime/proc.c:140
        goexit()

What is your $GOOS?  $GOARCH?
linux amd64

Which revision are you using?  (hg identify)
7df3be16abbf tip

Please provide any additional information below.

I am attaching a complete test program so you can see the error.

Attachments:

1. regexTest.go (225 bytes)

[peterGo]

Comment 1:

Isn't this related to issue #484: Regexp package : panic on repeated closure. Aren't
you using non-greedy operators like '*?'?

[rsc]

Comment 2:

Status changed to Duplicate.

Merged into issue #484.

[gopherbot]

Comment 3 by linuxhacker100:

I found a work around. I hope that you extend the regexp package soon.
p := regexp.MustCompile(`"([^"]*)"[^(]*\(1/([^)]*)\)`)