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instance method
String#chop!
chop! → self or nil
string.c
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static VALUE
rb_str_chop_bang(VALUE str)
{
str_modify_keep_cr(str);
if (RSTRING_LEN(str) > 0) {
long len;
len = chopped_length(str);
STR_SET_LEN(str, len);
TERM_FILL(&RSTRING_PTR(str)[len], TERM_LEN(str));
if (ENC_CODERANGE(str) != ENC_CODERANGE_7BIT) {
ENC_CODERANGE_CLEAR(str);
}
return str;
}
return Qnil;
}
Like String#chop, but modifies self in place; returns nil if self is empty, self otherwise.
Related: String#chomp!.