Java regex: Normalize all escaped or non-escaped newlines - why does this fail? -

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I am trying to normalize any new lines or try to avoid newlines in a new unisex newline string I am doing I can not understand why this does not work: 

  pattern EOL = Pattern.compile ("(\\\\ r)? \\\\ n | \ r? \ N" ); The last string saved EOL = "\\\\ n"; Println (EOL.matcher ("asdf \ njkl;") replaceAll (escapedEOL).); Println (EOL.matcher ("asdf \ n") replaceAll (escapedEOL).); Println (EOL.matcher ("asdf \ r \ njkl;") replaceAll (escapedEOL).); Println (EOL.matcher ("asdf \ r \ n") replaceAll (escapedEOL).); Println (EOL.matcher ("asdf \\ r \\ njkl,".) ReplaceAll (escapedEOL); Println (EOL.matcher ("asdf \\ r \\ n") replaceAll (escapedEOL).);   
 Result:  
  asdf \ njkl; Asdf asdf \ njkl; Asdf \ n asdf \ njkl; Asdf \ ncomplete   
 Can anyone shed any light on this? I know that I can divide it into two calls but now I'm curious ...  
  edit : It looks like I should work hard Quantifiers should be avoided with groups of Java 7.  
  pattern EOL = Pattern.compile ("\\\\ n | \\\\ r \\\\ n | \ r? \ N")   
 also works.   
 
 
 I'm not sure that your regex seems to work on changing, as you might Wanted, so make changes  
  Pattern EOL = Pattern.compile ("(\\\\ r)? \\\\ n | \ r \ n"); From   
 to  
  pattern EOL = Pattern.compile ("\ r? \ N | (\\\\ r)? \\\\ n" );   
  
 Anyway, it looks like a bug more than desired behavior and was changed to Java 8 so that your original Rijks also resulted in  < Pre>  asdf \ njkl; Asdf \ n asdf \ njkl; Asdf \ n asdf \ njkl; Asdf \ n

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