Bash 5.1, described as the fifth major release of the Unix and Linux shell in a release bulletin, was published earlier this month, featuring a return to Bash 4.4 behavior regarding pathname expansion.
Called the most significant change in the new release, the return to Bash 4.4 behavior involves not performing pathname expansion on a word that contains backslashes but does not contain unquoted globbing special characters. The Bash 5.1 release also introduces changes in trap handling while reading from the terminal, and it fixes a number of bugs including several that caused the shell to crash.