Issue #20350 has been updated by Eregon (Benoit Daloze). +1, I was thinking the same yesterday, that we could revisit `Symbol#to_s` and have a proper deprecation before changing it due to chilled strings landing. ---------------------------------------- Feature #20350: Return chilled string from Symbol#to_s https://bugs.ruby-lang.org/issues/20350#change-107348 * Author: Dan0042 (Daniel DeLorme) * Status: Open ---------------------------------------- During Ruby 2.7 development there was an attempt to return a frozen string from Symbol#to_s (#16150#note-22) This had to be rolled back due to incompatibility, but now we have chilled strings (#20205) Symbol#to_s can safely return a chilled string, giving developers time to fix warnings before switching to a frozen string. -- https://bugs.ruby-lang.org/