gnash 1.3.7

gnash 1.3.7

A large bash-conformance release. Since 1.3.6, gnash has been run against
bash 5.3's own test suite and brought into byte-for-byte agreement across
many areas. Highlights below; dozens of smaller fidelity fixes are included.

Namerefs (declare -n)

Namerefs are now close to bash's behavior end to end:

• Target validation: invalid targets (declare -n r=/, r="a b", an empty
  target) are rejected with bash's exact diagnostics and leave no half-created
  variable.
• Circular references: a self reference at function scope warns and resolves at
  global scope (maximum nameref depth on write, circular name reference on
  read); at global scope a direct self reference is still an error.
• unset -n removes the nameref itself; a temporary assignment to a nameref is
  scoped to its command; a nameref used as a for loop variable retargets each
  iteration; ${!ref} yields the referenced name.
• Array interactions: a nameref can target an array element (declare -n r=a[2]);
  making an existing array a nameref is rejected; declare -a on an unset
  nameref converts it to a real array.

Arrays and declare / typeset

• declare -p filters by attribute when given no names, lists by attribute,
  fixes flag order and associative-array formatting, and iterates associative
  arrays in bash's hash order.
• +X attribute removal, name+=value, -u/-l/-c case folding, and
  arithmetic evaluation of integer array-element assignments.
• Rejects converting an array between indexed and associative, assigning a list
  to a single element, and a subscripted target for readonly/export.

Traps and signals

Implemented the ERR, RETURN, and DEBUG traps (including firing for a
function body on entry under functrace and for self-installed traps), the
SIGCHLD trap on child reap, $BASH_TRAPSIG, bash-format trap listing with
-p/-P/-l, ignored-signal listing, kill -l, and $PS4 xtrace expansion.

Job control, expansions, and globbing

• Correct & / ; precedence, chained & as separate jobs, time,
  lastpipe, and $PIPESTATUS.
• Brace expansion: sequences with increments and zero-padding, nested and
  unmatched braces, escaped/quoted commas.
• Parameter and arithmetic expansion: ${@}/${*} lists, ${#@},
  per-element operators, $[...], arithmetic error messages, $'...'
  ANSI-C quoting inside ${...} and here-document defaults, case-toggle
  operators.
• Globbing: dotglob/extglob, globskipdots, GLOBIGNORE, and keeping
  ./.. out of dotglob matches.

Builtins and readline

Rewrote getopts to match bash, improved type, pushd/popd/dirs,
exported functions via the environment, restricted-shell mode, POSIX mode from
POSIXLY_CORRECT, set -k, and $SHELLOPTS/$- option state. The read,
history, and fc builtins and the default emacs/vi keybindings now match
bash on its own test suites.

Install

brew tap brianjfox/tools && brew trust brianjfox/tools && brew install gnash

Or download the universal (arm64 + x86_64) macOS tarball below.