Diff for "BashFAQ/061"

Differences between revisions 30 and 33 (spanning 3 versions)

Is there a list of which features were added to specific releases (versions) of Bash?

Here are some links to official Bash documentation:

NEWS: a file tersely listing the notable changes between the current and previous versions
CHANGES: a "complete" bash change history (back to 2.0 only)
COMPAT: compatibility issues between bash3 and previous versions

A more extensive list than the one below can be found at http://wiki.bash-hackers.org/scripting/bashchanges

Notable changes in the upcoming bash version

Feature	Added in version
loadable builtin deployment infrastructure	4.4-beta
mapfile -d	4.4-alpha
--help for builtins	4.4-alpha
${var@spec}	4.4-alpha
local -	4.4-alpha
$! and wait for process substitutions	4.4-alpha

Notable changes in released bash versions

Feature	Added in version
wait -n	4.3 (2014)
test -R	4.3 (2014)
declare/typeset -n and associated changes to ${!ref} and for..in	4.3 (2014)
array[-idx] (in assignments, read, unset, etc)	4.3 (2014)
\uXXXX and \UXXXXXXXX	4.2 (2011)
declare -g	4.2 (2011)
test -v	4.2 (2011)
printf %(fmt)T	4.2 (2011)
${array[-idx]} and ${var:start:-len}	4.2 (2011)
lastpipe (shopt)	4.2 (2011)
read -N	4.1 (2009)
{var}> or {var}< etc. (FD variable assignment)	4.1 (2009)
syslog history (compile option)	4.1 (2009)
BASH_XTRACEFD	4.1 (2009)
;& and ;;& fall-throughs for case	4.0 (2009)
associative arrays	4.0 (2009)
&>> and \|&	4.0 (2009)
command_not_found_handle (function)	4.0 (2009)
coproc (keyword)	4.0 (2009)
globstar (shopt)	4.0 (2009)
mapfile/readarray (builtin)	4.0 (2009)
${var,[,]} and ${var^[^]}	4.0 (2009)
{009..012} (leading zeros in brace expansions)	4.0 (2009)
{x..y..incr}	4.0 (2009)
read -t 0	4.0 (2009)
read -i	4.0 (2009)
x+=string array+=(string)	3.1 (2005)
printf -v var	3.1 (2005)
nocasematch (shopt)	3.1 (2005)
{x..y}	3.0 (2004)
${!array[@]}	3.0 (2004)
[[ =~	3.0 (2004)
printf %q produces $'...'	2.05b (2002)
<<<	2.05b (2002)
i++	2.04 (2000)
for ((;;))	2.04 (2000)
/dev/fd/N, /dev/tcp/host/port, etc.	2.04 (2000)
read -t, -n, -d and -s	2.04 (2000)
a=(*.txt) file expansion	2.03 (1999)
extglob (shopt)	2.02 (1998)
[[	2.02 (1998)
printf (builtin)	2.02 (1998)
$(< filename)	2.02 (1998)
** (exponentiation)	2.02 (1998)
\xNNN	2.02 (1998)
(( ))	2.0 (1996)

-  ⇤ ← Revision 30 as of 2015-10-22 19:29:46 → 
  Size: 2657
  Editor: GreyCat
  Comment:
+   ← Revision 33 as of 2016-06-28 15:42:19 → ⇥
  Size: 2814
  Editor: geirha
  Comment: Listing major.minor (year)  instead of which alpha versions the features appeared
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
-A more extensive, partial list than the one below can be found at http://wiki.bash-hackers.org/scripting/bashchanges
+A more extensive list than the one below can be found at http://wiki.bash-hackers.org/scripting/bashchanges
 Line 11:
-Here's a ''partial'' list of the changes, in a more compact format:
+=== Notable changes in the upcoming bash version ===
 Line 14:
-||[[BashLoadableBuiltins|loadable builtin]] deployment infrastructure||4.4-beta (not released yet)||
||mapfile -d||4.4-alpha (not released yet)||
+||[[BashLoadableBuiltins|loadable builtin]] deployment infrastructure||4.4-beta||
||mapfile -d||4.4-alpha||
 Line 20:
-||wait -n||4.3-alpha||
||test -R||4.3-alpha||
||declare/typeset -n and associated changes to ${!ref} and for..in||4.3-alpha||
||array[-idx] (in assignments, read, unset, etc)||4.3-alpha||
||\uXXXX and \UXXXXXXXX||4.2-alpha||
||declare -g||4.2-alpha||
||test -v||4.2-alpha||
||printf %(fmt)T||4.2-alpha||
||${array[-idx]} and ${var:start:-len}||4.2-alpha||
||lastpipe (shopt)||4.2-alpha||
||read -N||4.1-alpha||
||{var}> or {var}< etc. (FD variable assignment)||4.1-alpha||
||syslog history (compile option)||4.1-alpha||
||BASH_XTRACEFD||4.1-alpha||
||;& and ;;& fall-throughs for case||4.0-alpha||
||associative arrays||4.0-alpha||
||&>> and |&||4.0-alpha||
||command_not_found_handle||4.0-alpha||
||coproc||4.0-alpha||
||globstar||4.0-alpha||
||mapfile/readarray||4.0-alpha||
||${var,[,]} and ${var&#94;[&#94;]}||4.0-alpha||
||{009..012} (leading zeros in brace expansions)||4.0-alpha||
||{x..y..incr}||4.0-alpha||
||read -t 0||4.0-alpha||
||read -i||4.0-alpha||
||x+=string array+=(string)||3.1-alpha1||
||printf -v var||3.1-alpha1||
||{x..y}||3.0-alpha||
||${!array[@]}||3.0-alpha||
||[[ =~||3.0-alpha||
||printf %q produces $'...'||2.05b-alpha1||
||<<<||2.05b-alpha1||
||i++||2.04-devel||
||for ((;;))||2.04-devel||
||/dev/fd/N, /dev/tcp/host/port, etc.||2.04-devel||
||read -t, -n, -d and -s||2.04-devel||
||a=(*.txt) file expansion||2.03-alpha||
||extglob||2.02-alpha1||
||[[||2.02-alpha1||
||builtin printf||2.02-alpha1||
||$(< filename)||2.02-alpha1||
||** (exponentiation)||2.02-alpha1||
||\xNNN||2.02-alpha1||
||(( ))||2.0-beta2||
+=== Notable changes in released bash versions ===

||'''Feature'''||'''Added in version'''||
||wait -n||4.3 (2014)||
||test -R||4.3 (2014)||
||declare/typeset -n and associated changes to ${!ref} and for..in||4.3 (2014)||
||array[-idx] (in assignments, read, unset, etc)||4.3 (2014)||
||\uXXXX and \UXXXXXXXX||4.2 (2011)||
||declare -g||4.2 (2011)||
||test -v||4.2 (2011)||
||printf %(fmt)T||4.2 (2011)||
||${array[-idx]} and ${var:start:-len}||4.2 (2011)||
||lastpipe (shopt)||4.2 (2011)||
||read -N||4.1 (2009)||
||{var}> or {var}< etc. (FD variable assignment)||4.1 (2009)||
||syslog history (compile option)||4.1 (2009)||
||BASH_XTRACEFD||4.1 (2009)||
||;& and ;;& fall-throughs for case||4.0 (2009)||
||associative arrays||4.0 (2009)||
||&>> and |&||4.0 (2009)||
||command_not_found_handle (function)||4.0 (2009)||
||coproc (keyword)||4.0 (2009)||
||globstar (shopt)||4.0 (2009)||
||mapfile/readarray (builtin)||4.0 (2009)||
||${var,[,]} and ${var&#94;[&#94;]}||4.0 (2009)||
||{009..012} (leading zeros in brace expansions)||4.0 (2009)||
||{x..y..incr}||4.0 (2009)||
||read -t 0||4.0 (2009)||
||read -i||4.0 (2009)||
||x+=string array+=(string)||3.1 (2005)||
||printf -v var||3.1 (2005)||
||nocasematch (shopt)||3.1 (2005)||
||{x..y}||3.0 (2004)||
||${!array[@]}||3.0 (2004)||
||[[ =~||3.0 (2004)||
||printf %q produces $'...'||2.05b (2002)||
||<<<||2.05b (2002)||
||i++||2.04 (2000)||
||for ((;;))||2.04 (2000)||
||/dev/fd/N, /dev/tcp/host/port, etc.||2.04 (2000)||
||read -t, -n, -d and -s||2.04 (2000)||
||a=(*.txt) file expansion||2.03 (1999)||
||extglob (shopt)||2.02 (1998)||
||[[||2.02 (1998)||
||printf (builtin)||2.02 (1998)||
||$(< filename)||2.02 (1998)||
||** (exponentiation)||2.02 (1998)||
||\xNNN||2.02 (1998)||
||(( ))||2.0 (1996)||