Jeremy Evans 58325daae3 Make String methods return String instances when called on a subclass instance ... This modifies the following String methods to return String instances instead of subclass instances: * String#* * String#capitalize * String#center * String#chomp * String#chop * String#delete * String#delete_prefix * String#delete_suffix * String#downcase * String#dump * String#each/#each_line * String#gsub * String#ljust * String#lstrip * String#partition * String#reverse * String#rjust * String#rpartition * String#rstrip * String#scrub * String#slice! * String#slice/#[] * String#split * String#squeeze * String#strip * String#sub * String#succ/#next * String#swapcase * String#tr * String#tr_s * String#upcase This also fixes a bug in String#swapcase where it would return the receiver instead of a copy of the receiver if the receiver was the empty string. Some string methods were left to return subclass instances: * String#+@ * String#-@ Both of these methods will return the receiver (subclass instance) in some cases, so it is best to keep the returned class consistent. Fixes [#10845]		2020-11-20 16:30:23 -08:00
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basicobject
enumerable	Update to ruby/spec@4f59d86	2020-10-24 15:53:53 +02:00
enumerator	Update to ruby/spec@b0b7f53	2020-11-13 13:17:24 +01:00
fiber	relax Fiber#transfer's restriction	2020-10-12 22:58:41 +09:00
file
hash
io
kernel	Update to ruby/spec@b0b7f53	2020-11-13 13:17:24 +01:00
math
process
queue
rational
sizedqueue
string	Make String methods return String instances when called on a subclass instance	2020-11-20 16:30:23 -08:00
time