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regexp: false negative in MatchString #1373

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rsc opened this issue Dec 28, 2010 · 2 comments
Closed

regexp: false negative in MatchString #1373

rsc opened this issue Dec 28, 2010 · 2 comments
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@rsc
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@rsc rsc commented Dec 28, 2010

package main

import (
    "fmt"
    "regexp"
)

func main() {
    match, err := regexp.MatchString(`\([^()]+\)`, `((x))`)
    if err != nil {
        panic(err)
    }
    if !match {
        fmt.Println("should match, does not")
    }
}
@robpike
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@robpike robpike commented Dec 28, 2010

Comment 1:

Notes to self:
A simpler failure case is "zx+" matching "zzx".
The bug goes away (as usual) if you disable the prefix optimization (just return from
setPrefix).
@robpike
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@robpike robpike commented Jan 3, 2011

Comment 2:

This issue was closed by revision 15cb7ed.

Status changed to Fixed.

@rsc rsc added fixed labels Jan 3, 2011
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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