Append NSAttributedString

gistfile1.m

NSAttributedString *subjectString =
[[NSAttributedString alloc] initWithString:@"git"
                                attributes:@{
           NSForegroundColorAttributeName : [UIColor blueColor],
                      NSFontAttributeName : [UIFont boldSystemFontOfSize:20]
 }];
NSAttributedString *verbString = [[NSAttributedString alloc] initWithString:@" push -u "];

NSAttributedString *objectString =
[[NSAttributedString alloc] initWithString:@"origin master"
                                attributes:@{
           NSForegroundColorAttributeName : [UIColor redColor],
                      NSFontAttributeName : [UIFont boldSystemFontOfSize:20]
 }];
    
NSMutableAttributedString *message = [[NSMutableAttributedString alloc] initWithAttributedString:subjectString];
[message appendAttributedString:verbString];
[message appendAttributedString:objectString];

self.label.attributedText = message;