Yet Another Shell

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Yet another shell, version 2.39.

This version includes many bug fixes. It also includes some backward-incompatible changes to improve POSIX-conformance:

• The "return" built-in has been changed not to interrupt the "eval" and "fc" built-ins.
• The "read" built-in now requires an option to enable line-editing. Previously, line-editing was automatically used if the shell was interactive.

Yash 2.39

• + New options for the "read" built-in: -e, -P, -p
• + New completion script for: passwd, valgrind
• - The configuration option '--disable-alias' has been dropped.
• = The "read" built-in now requires the -e (--line-editing) option to enable line-editing.
• = The behavior of the "trap" built-in now conforms to POSIX.1-2013. The built-in prints the traps for the calling shell rather than the subshell when it is executed in a command substitution.
• = The manual for the "return" built-in has been clarified as to what the built-in can return from. The behavior of the built-in has been modified accordingly. It no longer interrupts the "eval" and "fc" built-ins.
• * Crash on division by zero with the "/=" or "%=" operator in arithmetic expansion.
• * Crash in the "complete" built-in called without the -D option.
• * Yash no longer tries to find the profile and rcfile scripts in the root directory when $HOME is not set.
• * The "read" built-in with a single operand was failing to trim initial IFS whitespaces in field splitting.
• * The "read" built-in was not handling backslashes correctly in field splitting if $IFS contained a backslash.
• * The "-o allexport" option was being ignored when an array is assigned by the "read" built-in with the -A option.
• * Traps are no longer handled while waiting for input with line- editing in the "read" built-in.
• * Operands to the "set" built-in are now correctly completed.
• * Minor fix in completion script for "git-svn".

Legend:

• +: new feature
• -: removed feature
• =: specification change
• *: bug fix