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zsh-syntax-highlighting/changelog.md

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Changes in HEAD

Notice about an improbable-but-not-impossible forward incompatibility

Everyone can probably skip this section.

The master branch of zsh-syntax-highlighting uses a zsh feature that has not
yet appeared in a zsh release: the memo= feature, added to zsh in commit
zsh-5.8-172-gdd6e702ee (after zsh 5.8, before zsh 5.9). In the unlikely event
that this zsh feature should change in an incompatible way before the next
stable zsh release, set zsh_highlight__memo_feature=0 in your .zshrc files to
disable use of the new feature.

z-sy-h dogfoods the new, unreleased zsh feature because that feature was
added to zsh at z-sy-h's initiative. The new feature is used in the fix
to issue #418.

Incompatible changes:

  • An unsuccessful completion (a ⮀ Tab press that doesn't change the
    command line) no longer causes highlighting to be lost. Visual feedback can
    alternatively be achieved by setting the format zstyle under the warnings
    tag, for example,

      zstyle ':completion:*:warnings' format '%F{red}No matches%f'

    Refer to the [description of the format style in zshcompsys(1)]
    zshcompsys-Standard-Styles-format.

    (#90, part of #245 (feature/redrawhook))

Other changes:

  • Document $ZSH_HIGHLIGHT_MAXLENGTH.
    [#698]

  • Optimize highlighting unquoted words (words that are not in single quotes, double quotes, backticks, or dollar-single-quotes)
    [#730]

  • Redirection operators (e.g., < and >) are now highlighted by default
    [#646]

  • Propertly terminate noglob scope in try/always blocks
    [#577]

  • Don't error out when KSH_ARRAYS is set in the calling scope
    [#622, #689]

  • Literal semicolons in array assignments (foo=( bar ; baz )) are now
    highlighted as errors.
    [3ca93f864f]

  • Command separators in array assignments (foo=( bar | baz )) are now
    highlighted as errors.
    [#651, 81267ca313]

  • Support parameter elision in command position (e.g., $foo ls where $foo is unset or empty)
    [#667]

  • Don't consider the filename in sudo -e /path/to/file to be a command position
    [#678]

  • Don't look up absolute directory names in $cdpath
    [2cc2583f8f, part of #669]

  • Fix exec 2>&1; being highlighted as an error.
    [#676]

  • Fix : $(<*) being highlighted as globbing.
    [#582]

  • Fix cat < * being highlighting as globbing when the MULTIOS option is unset.
    [#583]

  • Fix echo >&2 highlighting the 2 as a filename if a file by that name happened to exist
    [#694, part of #645]

  • Fix echo >&- highlighting the - as a filename if a file by that name happened to exist
    [part of #645]

  • Fix echo >&p highlighting the p as a filename if a file by that name happened to exist
    [part of #645]

  • Fix wrong highlighting of unquoted parameter expansions under zsh 5.2 and older
    [e165f18c75]

  • Highlight global aliases
    [#700]

  • Highlight : =nosuchcommand' as an error (when the EQUALS` option hasn't been unset).
    [#430]

  • Highlight reserved word after assignments as errors (e.g., foo=bar (ls;))
    [#461]

  • Correctly highlight [[ foo && bar || baz ]].

  • Highlight non-executable files in command position correctly (e.g., % /etc/passwd)
    [#202, #669]

  • Highlight directories in command position correctly, including AUTO_CD support
    [#669]

  • Recognize env as a precommand (e.g., env FOO=bar ls)

  • Recognize strace as a precommand

  • Fix an error message on stderr before every prompt when the WARN_NESTED_VAR zsh option is set:
    _zsh_highlight_main__precmd_hook:1: array parameter _zsh_highlight_main__command_type_cache set in enclosing scope in function _zsh_highlight_main__precmd_hook
    [#727, #731, #732, #733]

  • Fix highlighting of alias whose definitions use a simple command terminator
    (such as ;, |, &&) before a newline
    [#677; had regressed in 0.7.0]

  • Highlight arithmetic expansions (e.g., $(( 42 )))
    [#607 #649 #704]

  • Highlight the parentheses of array assignments as reserved words (foo=( bar )).
    The assign style remains supported and has precedence.
    [#585]

  • Fix interoperability issue with other plugins that use highlighting. The fix
    requires zsh 5.8.0.3 or newer. (zsh 5.8.0.2-dev from the master branch,
    revision zsh-5.8-172-gdd6e702ee or newer is also fine.)
    [#418, https://github.com/okapia/zsh-viexchange/issues/1]

Changes in version 0.7.1

  • Remove out-of-date information from the 0.7.0 changelog.

Changes in version 0.7.0

This is a stable bugfix and feature release. Major new features and changes include:

  • Add ZSH_HIGHLIGHT_DIRS_BLACKLIST to disable "path" and "path prefix"
    highlighting for specific directories
    [#379]

  • Add the "regexp" highlighter, modelled after the pattern highlighter
    [4e6f60063f]

  • When a word uses globbing, only the globbing metacharacters will be highlighted as globbing:
    in : foo*bar, only the * will be blue.
    [e48af35753]

  • Highlight pasted quotes (e.g., : foo"bar")
    [dc1b2f6fa4]

  • Highlight command substitutions (: `ls`, : $(ls))
    [c0e64fe131 and parents, e86f75a840, et al]

  • Highlight process substitutions (: >(nl), : <(pwd), : =(git diff))
    [c0e64fe131 and parents, e86f75a840, et al]

  • Highlight command substitutions inside double quotes (: "`foo`")
    [f16e858f0c]

  • Highlight many precommands (e.g., nice, stdbuf, eatmydata;
    see $precommand_options in the source)

  • Highlight numeric globs (e.g., echo /lib<->)

  • Assorted improvements to aliases highlighting
    (e.g.,
    alias sudo_u='sudo -u'; sudo_u jrandom ls,
    alias x=y y=z z=nosuchcommand; x,
    alias ls='ls -l'; \ls)
    [f3410c5862, 57386f30ae, #544, and many others]

  • Highlight some more syntax errors
    [dea05e44e6, 298ef6a2fa]

  • New styles: named file descriptors, RC_QUOTES, and unclosed quotes (e.g., echo "foo<CURSOR>)
    [38c794a978, 25ae1c0121, 967335dfc5fd]

  • The 'brackets' highlighting no longer treats quotes specially.
    [ecdda36ef5]

Selected bugfixes include:

Known issues include:

  • A multiline alias that uses a simple command terminator (such as ;, |, &&)
    before a newline will incorrectly be highlighted as an error. See issue #677
    for examples and workarounds.
    [#677]
    [UPDATE: Fixed in 0.8.0]

Changes in version 0.6.0

This is a stable release, featuring bugfixes and minor improvements.

Performance improvements:

(none)

Added highlighting of:

  • Possible history expansions in double-quoted strings.
    (76ea9e1df3)

  • Mismatched if/then/elif/else/fi.
    (73cb832702)

Fixed highlighting of:

  • A comment line followed by a non-comment line.
    (#385, 9396ad5c5f)

  • An unquoted $* (expands to the positional parameters).
    (237f89ad62)

  • history-incremental-pattern-search-backward under zsh 5.3.1.
    (#407, #415, 462779629a)

API changes (for highlighter authors):

(none)

Developer-visible changes:

  • tests: Set the ALIAS_FUNC_DEF option for zsh 5.4 compatibility.
    (9523d6d49c)

Other changes:

  • docs: Added before/after screenshots.
    (cd9ec14a65ec..b7e277106b49)

  • docs: Link Fedora package.
    (3d74aa47e4, 5feed23962)

  • docs: Link FreeBSD port.
    (626c034c68)

  • docs: Link OpenSUSE Build Service packages
    (#419, dea1fedc73)

  • Prevent user-defined aliases from taking effect in z-sy-h's own code.
    (#390, 2dce602727, 8d5afe47f774; and #392, #395, b8fa1b9dc9)

  • docs: Update zplug installation instructions.
    (#399, 4f49c4a35f)

  • Improve "unhandled ZLE widget 'foo'" error message.
    (#409, be083d7f37)

  • Fix printing of "failed loading highlighters" error message.
    (#426, ad522a0914)

Changes in version 0.5.0

Performance improvements:

We thank Sebastian Gniazdowski and "m0viefreak" for significant contributions
in this area.

  • Optimize string operations in the main (default) highlighter.
    (#372/3cb58fd7d7b9, 02229ebd63, ef4bfe5bcc, #372/c6b6513ac0d6, #374/15461e7d21c3)

  • Command word highlighting: Use the zsh/parameter module to avoid forks.
    Memoize (cache) the results.
    (#298, 3ce01076b5, 2f18ba64e3, 12b879caf7a6; #320, 3b67e656bf)

  • Avoid forks in the driver and in the root highlighter.
    (b9112aec79, 38c8fbea2d)

Added highlighting of:

  • pkexec (a precommand).
    (#248, 4f3910cbba)

  • Aliases that cannot be defined normally nor invoked normally (highlighted as an error).
    (#263 (in part), 28932316cc)

  • Path separators (/) — the default behaviour remains to highlight path separators
    and path components the same way.
    (#136, #260, 6cd39e7c70, 9a934d291e, f3d3aaa00c)

  • Assignments to individual positional arguments (42=foo to assign to $42).
    (f4036a09ce)

  • Linewise region (the visual-line-mode widget, bound to V in zsh's vi keymap).
    (#267, a7a7f8b422, ee07588cfd)

  • Command-lines recalled by isearch mode; requires zsh≥5.3.
    (#261 (in part); #257; 4ad311ec0a)

  • Command-lines whilst the IGNORE_BRACES or IGNORE_CLOSE_BRACES option is in effect.
    (a8a6384356, 02807f1826)

  • Mismatched parentheses and braces (in the main highlighter).
    (51b9d79c3b, 2fabf7ca64, a4196eda5e, and others)

  • Mismatched do/done keywords.
    (b2733a64da)

  • Mismatched foreach/end keywords.
    (#96, 2bb8f0703d)

  • In Bourne-style function definitions, when the MULTI_FUNC_DEF option is set
    (which is the default), highlight the first word in the function body as
    a command word: f() { g "$@" }.
    (6f91850a01)

  • always blocks.
    (#335, e5782e4ddf)

  • Command substitutions inside double quotes, "$(echo foo)".
    (#139 (in part), c3913e0d8e)

  • Non-alphabetic parameters inside double quotes ("$$", "$#", "$*", "$@", "$?", "$-").
    (4afe670f7a, 44ef6e38e5)

  • Command words from future versions of zsh (forward compatibly).
    This also adds an arg0 style that all other command word styles fall back to.
    (b4537a972e, bccc3dc269)

  • Escaped history expansions inside double quotes: : "\!"
    (28d7056a7a, et seq)

Fixed highlighting of:

  • Command separator tokens in syntactically-invalid positions.
    (09c4114eb9)

  • Redirections with a file descriptor number at command word.
    (#238 (in part), 73ee7c1f6c)

  • The select prompt, $PS3.
    (#268, 451665cb2a)

  • Values of variables in vared.
    (e500ca2462)

  • ! as an argument (neither a history expansion nor a reserved word).
    (4c23a2fd1b)

  • "division by zero" error under the brackets highlighter when $ZSH_HIGHLIGHT_STYLES is empty.
    (f73f3d53d3)

  • Process substitutions, <(pwd) and >(wc -l).
    (#302, 6889ff6bd2, bfabffbf97, fc9c892a3f)

  • The non-SHORT_LOOPS form of repeat loops: repeat 42; do true; done.
    (#290, 4832f18c50, ef68f50c04, 6362c757b6)

  • Broken symlinks (are now highlighted as files).
    (#342, 95f7206a93, 53083da821)

  • Lines accepted from isearch mode.
    (#284; #257, #259, #288; 5bae621900, a8fe22d422)

  • Work around upstream bug that triggered when the command word was a relative
    path, that when interpreted relative to a $PATH directory denoted a command;
    the effect of that upstream bug was that the relative path was cached as
    a "valid external command name".
    (#354, #355, 51614ca2c9, fdaeec4514, 7d38d07255e4;
    upstream fix slated to be released in 5.3 (workers/39104))

  • After accepting a line with the cursor on a bracket, the matching bracket
    of the bracket under the cursor no longer remains highlighted (with the
    brackets highlighter).
    (4c4baede51)

  • The first word on a new line within an array assignment or initialization is no
    longer considered a command position.
    (8bf423d16d)

  • Subshells that end at command position, (A=42), (true;).
    (#231, 7fb6f9979121; #344, 4fc35362ee)

  • Command word after array assignment, a=(lorem ipsum) pwd.
    (#330, 7fb6f99791)

API changes (for highlighter authors):

Developer-visible changes:

Other changes:

  • Under zsh≤5.2, widgets whose names start with a _ are no longer excluded
    from highlighting.
    (ed33d2cb1388; reverts part of 186d80054a which was for #65)

  • Under zsh≤5.2, widgets implemented by a function named after the widget are
    no longer excluded from highlighting.
    (487b122c480d; reverts part of 776453cb5b)

  • Under zsh≤5.2, shell-unsafe widget names can now be wrapped.
    (#278, 6a634fac9f, et seq)

  • Correct some test expectations.
    (78290e043b)

  • zsh-syntax-highlighting.plugin.zsh: Convert from symlink to plain file
    for msys2 compatibility.
    (#292, d4f8edc9f3)

  • Document installation under some plugin managers.
    (e635f766be, 9cab566f53)

  • Don't leak the PATH_DIRS option.
    (7b82b88a71)

  • Don't require the FUNCTION_ARGZERO option to be set.
    (#338, 750aebc553)

  • Under zsh≤5.2, support binding incomplete/nonexistent widgets.
    (9e569bb0fe, part of #288)

  • Make the driver reentrant, fixing possibility of infinite recursion
    under zsh≤5.2 under interaction with theoretical third-party code.
    (#305, d711563fe1, 295d62ec88, f3242cbd6a)

  • Fix warnings when WARN_CREATE_GLOBAL is set prior to sourcing zsh-syntax-highlighting.
    (z-sy-h already sets WARN_CREATE_GLOBAL internally.)
    (da60234fb2)

  • Warn only once, rather than once per keypress, when a highlighter is unavailable.
    (0a9b347483)

Changes in version 0.4.1

Fixes:

  • Arguments to widgets were not properly dash-escaped. Only matters for widgets
    that take arguments (i.e., that are invoked as zle ${widget} -- ${args}).
    (282c7134e8, reverts c808d2187a)

Changes in version 0.4.0

Added highlighting of:

  • incomplete sudo commands
    (a3047a9121, 2f05620b19)

    sudo;
sudo -u;

  • command words following reserved words
    (#207, #222, b397b12ac1 et seq, 6fbd2aa957 et seq, 8b4adbd991)

    if ls; then ls; else ls; fi
repeat 10 do ls; done

    (The ls are now highlighted as a command.)

  • comments (when INTERACTIVE_COMMENTS is set)
    (#163, #167, 693de99a90)

    echo Hello # comment

  • closing brackets of arithmetic expansion, subshells, and blocks
    (#226, a59f442d2d, et seq)

    (( foo ))
( foo )
{ foo }

  • command names enabled by the PATH_DIRS option
    (#228, 96ee5116b1)

    # When ~/bin/foo/bar exists, is executable, ~/bin is in $PATH,
# and 'setopt PATH_DIRS' is in effect
foo/bar

  • parameter expansions with braces inside double quotes
    (#186, 6e3720f39d)

    echo "${foo}"

  • parameter expansions in command word
    (#101, 4fcfb15913)

    x=/bin/ls
$x -l

  • the command separators '|&', '&!', '&|'

    view file.pdf &!  ls

Fixed highlighting of:

  • precommand modifiers at non-command-word position
    (#209, 2c9f8c8c95)

    ls command foo

  • sudo commands with infix redirections
    (#221, be006aded5, 86e9249709)

    sudo -u >/tmp/foo.out user ls

  • subshells; anonymous functions
    (#166, #194, 0d1bfbcbfa, 9e178f9f39)

    (true)
() { true }

  • parameter assignment statements with no command
    (#205, 01d7eeb3c7)

    A=1;

    (The semicolon used to be highlighted as a mistake)

  • cursor highlighter: Remove the cursor highlighting when accepting a line.
    (#109, 4f0c293fde)

Removed features:

  • Removed highlighting of approximate paths (path_approx).
    (#187, 98aee7f8b9)

Other changes:

  • main highlighter refactored to use states rather than booleans.
    (2080a441ac, et seq)

  • Fix initialization when sourcing zsh-syntax-highlighting.zsh via a symlink
    (083c47b007)

  • docs: Add screenshot.
    (57624bb9f6)

  • widgets wrapping: Don't add '--' when invoking widgets.
    (c808d2187a) [reverted in 0.4.1]

  • Refresh highlighting upon accept-* widgets (accept-line et al).
    (59fbdda64c)

  • Stop leaking match/mbegin/mend to global scope (thanks to upstream
    WARN_CREATE_GLOBAL improvements).
    (d3deffbf46)

  • 'make install': Permit setting $(SHARE_DIR) from the environment.
    (e1078a8b4c)

  • driver: Tolerate KSH_ARRAYS being set in the calling context.
    (#162, 8f19af6b31)

  • 'make install': Install documentation fully and properly.
    (#219, b1619c0013, et seq)

  • docs: Improve 'main' highlighter's documentation.
    (00de155063, 7d4252f5f5)

  • docs: Moved to a new docs/ tree; assorted minor updates
    (c575f8f375, 5b34c23cfa, et seq)

  • docs: Split README.md into INSTALL.md
    (0b3183f6cb)

  • driver: Report $ZSH_HIGHLIGHT_REVISION when running from git
    (84734ba950)

Developer-visible changes:

Changes in version 0.3.0

Added highlighting of:

  • suffix aliases (requires zsh 5.1.1 or newer):

    alias -s png=display
foo.png

  • prefix redirections:

    <foo.txt cat

  • redirection operators:

    echo > foo.txt

  • arithmetic evaluations:

    (( 42 ))

  • $'' strings, including \x/\octal/\u/\U escapes

    : $'foo\u0040bar'

  • multiline strings:

    % echo "line 1
line 2"

  • string literals that haven't been finished:

    % echo "Hello, world

  • command words that involve tilde expansion:

    % ~/bin/foo

Fixed highlighting of:

  • quoted command words:

    % \ls

  • backslash escapes in "" strings:

    % echo "\x41"

  • noglob after command separator:

    % :; noglob echo *

  • glob after command separator, when the first command starts with 'noglob':

    % noglob true; echo *

  • the region (vi visual mode / set-mark-command) (issue #165)

  • redirection and command separators that would be highlighted as path_approx

    % echo foo;‸
% echo <‸

    (where ‸ represents the cursor location)

  • escaped globbing (outside quotes)

    % echo \*

Other changes:

  • implemented compatibility with zsh's paste highlighting (issue #175)

  • $? propagated correctly to wrapped widgets

  • don't leak $REPLY into global scope

Developer-visible changes:

  • added makefile with install and test targets

  • set warn_create_global internally

  • document release process

Version 0.2.1

(Start of changelog.)