Newline chars somehow get added to my strings. And cant remove them

On some of my strings there seems to be somekind of newline char. I think this is the case because when i do a simple NSLog

NSLog(@"Test: %@",aNSMutableString);

I would 开发者_如何学Cget output like below

Test:
I am a String

I've tried using

[mutableString stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]];

But it does not remove whatever it is thats forcing the newline to happen.

In a string that i parse out from a file which has 4 characters 'm3u8' has 5 chars when I check the length of the new string.

Anybody got an idea of what might be going on?

Thanks -Code

P.S. I know I could just zap the first char out of all my strings but it feels like a hack and i still wont know whats going on.

[mutableString stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]]; 

The above will not directly modify your mutableString. It returns a new autoreleased NSString with the characters trimmed. See NSString doc.

e.x.

NSString *trimmedString = [mutableString stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]];
NSLog(@"Test: %@", trimmedString);

should give you expected results.

I think @Sam 's answer will fix your problem, but I think the origin of your problem is the file source. Do you know how it is encoded? Is it part of a download? My guess is that you have a Windows' file with "\n\r" terminating lines and you are using Unix string tools that are breaking on "\n", thus leaving a leading "\r".

Verify the source of the file and read the document lines with the appropriate encoding.