= Yash now supports the 2013 edition of POSIX.1-2008.
= Unclosed here-documents are now always rejected.
= A job-control shell now ignores SIGTTIN and SIGTTOU by default.
= Line-editing can now be interrupted by SIGINT.
= The "-o errexit" option is now applied to redirection errors on compound commands and expansion errors in the for and case commands.
* In backquoted command substitutions that occur in double quotes, backslashes that escape a double quote are now handled before the containing command is parsed.