2.57

What's Changed

• Added support for the "$POST_PROMPT_COMMAND" variable, whose value
  is executed after reading a command line in the interactive shell.
• If the shell exits because of a shell error during the EXIT trap,
  the shell now returns the exit status of the error rather than that
  of the last command before the EXIT trap.
• [line-editing] Fixed the spurious error message printed when
  completing after git config alias. with the nounset shell option
  enabled.
• [line-editing] Completion no longer inserts a redundant backslash
  to escape a character included in the completed word
  when the cursor follows another backslash.
• Updated the sample initialization script (yashrc):
  • Added setup for VS Code shell integration.

Full Changelog: 2.56.1...2.57