fish-shell/fish-shell 2.2.0

fish 2.2.0

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Release Notes for fish 2.2.0 (released July 12, 2015)

Significant changes

• Abbreviations: the new abbr command allows for interactively-expanded abbreviations, allowing quick access to frequently-used commands (#731).
• Vi mode: run fish_vi_mode to switch fish into the key bindings and prompt familiar to users of the Vi editor (#65).
• New inline and interactive pager, which will be familiar to users of zsh (#291).
• Underlying architectural changes: the fishd universal variable server has been removed as it was a source of many bugs and security problems. Notably, old fish sessions will not be able to communicate universal variable changes with new fish sessions. For best results, restart all running instances of fish.
• The web-based configuration tool has been redesigned, featuring a prompt theme chooser and other improvements.
• New German, Brazilian Portuguese, and Chinese translations.

Backward-incompatible changes

These are kept to a minimum, but either change undocumented features or are too hard to use in their existing forms. These changes may break existing scripts.

• commandline no longer interprets functions "in reverse", instead behaving as expected (#1567).
• The previously-undocumented CMD_DURATION variable is now set for all commands and contains the execution time of the last command in milliseconds (#1585). It is no longer exported to other commands (#1896).
• if / else conditional statements now return values consistent with the Single Unix Specification, like other shells (#1443).
• A new "top-level" local scope has been added, allowing local variables declared on the commandline to be visible to subsequent commands. (#1908)

Other notable fixes and improvements

• New documentation design (#1662), which requires a Doxygen version 1.8.7 or newer to build.
• Fish now defines a default directory for other packages to provide completions. By default this is /usr/share/fish/vendor-completions.d; on systems with pkgconfig installed this path is discoverable with pkg-config --variable completionsdir fish.
• A new parser removes many bugs; all existing syntax should keep working.
• New fish_preexec and fish_postexec events are fired before and after job execution respectively (#1549).
• Unmatched wildcards no longer prevent a job from running. Wildcards used interactively will still print an error, but the job will proceed and the wildcard will expand to zero arguments (#1482).
• The . command is deprecated and the source command is preferred (#310).
• bind supports "bind modes", which allows bindings to be set for a particular named mode, to support the implementation of Vi mode.
• A new export alias, which behaves like other shells (#1833).
• command has a new --search option to print the name of the disk file that would be executed, like other shells' command -v (#1540).
• commandline has a new --paging-mode option to support the new pager.
• complete has a new --wraps option, which allows a command to (recursively) inherit the completions of a wrapped command (#393), and complete -e now correctly erases completions (#380).
• Completions are now generated from manual pages by default on the first run of fish (#997).
• fish_indent can now produce colorized (--ansi) and HTML (--html) output (#1827).
• functions --erase now prevents autoloaded functions from being reloaded in the current session.
• history has a new --merge option, to incorporate history from other sessions into the current session (#825).
• jobs returns 1 if there are no active jobs (#1484).
• read has several new options:
  • --array to break input into an array (#1540)
  • --null to break lines on NUL characters rather than newlines (#1694)
  • --nchars to read a specific number of characters (#1616)
  • --right-prompt to display a right-hand-side prompt during interactive read (#1698).
• type has a new -q option to suppress output (#1540 and, like other shells, type -a now prints all matches for a command (#261).
• Pressing F1 now shows the manual page for the current command (#1063).
• fish_title functions have access to the arguments of the currently running argument as $argv[1] (#1542).
• The OS command-not-found handler is used on Arch Linux (#1925), nixOS (#1852), openSUSE and Fedora (#1280).
• Alt+. searches backwards in the token history, mapping to the same behavior as inserting the last argument of the previous command, like other shells (#89).
• The SHLVL environment variable is incremented correctly (#1634 & #1693).
• Added completions for adb (#1165 & #1211), apt (#2018), aura (#1292), composer (#1607), cygport (#1841), dropbox (#1533), elixir (#1167), fossil, heroku (#1790), iex (#1167), kitchen (#2000), nix (#1167), node/npm (#1566), opam (#1615), setfacl (#1752), tmuxinator (#1863), and yast2 (#1739).
• Improved completions for brew (#1090 & #1810), bundler (#1779), cd (#1135), emerge (#1840),git (#1680, #1834 & #1951), man (#960), modprobe (#1124), pacman (#1292), rpm (#1236), rsync (#1872), scp (#1145), ssh (#1234), sshfs (#1268), systemctl (#1462, #1950 & #1972), tmux (#1853), vagrant (#1748), yum (#1269), and zypper (#1787).