[GROOVY-6562] Regex argument is altered when passed to Groovy program on Windows

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2.1
• Component/s: command line processing
• Environment: Windows 7
• Assignee: Unassigned
• Reporter: Amardeep Sarkar
• Created: 09/Feb/14 11:53
• Updated: 13/Apr/15 08:58

Description

Caret (^) is removed from regex argument when passed to a Groovy program from Windows command line, thus altering the meaning of the pattern altogether. An identical Java program receives the argument as-is, this proving that the problem isn't with Windows cmd. Details here:
http://groovy.329449.n5.nabble.com/Groovy-alters-my-regex-argument-td5718306.html

class RegexG {
    static void main(String[] args) {
		println "Pattern: ${args[0]}"
		println "String: ${args[1]}"
		
        Pattern p = Pattern.compile(args[0])
        Matcher m = p.matcher(args[1])

	while (m.find()) {
	    println("Group: \"${m.group()}\"")
	}
	m.reset()

	while (m.find()) {
	    println("Replace all: \"${m.replaceAll('')}\"")
	}
    }
}

Input

>groovy RegexG "[^a-zA-Z0-9\\\\s]" "a-b; 9"

Output (notice the ^ stripped out)

Pattern: [a-zA-Z0-9\\s]
String: a-b; 9
Group: "a"
Group: "b"
Group: "9"
Replace all: "-; "