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Changes in HEAD

  • Highlight &> >&| >&! &>| and &>! as redirection. [#942]

Changes in 0.8.0

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

Changes fixed as part of the switch to zle-line-pre-redraw

The changes in this section were fixed by switching to a zle-line-pre-redraw-based implementation.

Note: The new implementation will only be used on future zsh releases, numbered 5.8.1.1 and newer, due to interoperability issues with other plugins (issues #418 and #579). The underlying zsh feature has been available since zsh 5.3.

Whilst under development, the new implementation was known as the "feature/redrawhook" topic branch.

  • Fixed: Highlighting not triggered after popping a buffer from the buffer stack (using the push-line widget, default binding: M-q) [#40]

  • Fixed: Invoking completion when there were no matches removed highlighting [#90, #470]

  • Fixed: Two successive deletes followed by a yank only yanked the latest delete, rather than both of them [#150, #151, #160; cf. #183]

  • Presumed fixed: Completing $(xsel) results in an error message from xsel, with pre-2017 versions of xsel. (For 2017 vintage and newer, see the issue for details.) [#154]

  • Fixed: When the standard bracketed-paste-magic widget is in use, pastes were slow [#295]

  • Fixed: No way to prevent a widget from being wrapped [#324]

  • Fixed: No highlighting while cycling menu completion [#375]

  • Fixed: Does not coexist with the IGNORE_EOF option [#377]

  • Fixed: The undefined-key widget was wrapped [#421]

  • Fixed: Does not coexist with the standard surround family of widgets [#520]

  • Fixed: First completed filename doesn't get path highlighting [#632]

Other changes

  • Add issue #712 to the previous release's changelog (hereinafter).

  • Fix highlighting when using an alias twice inside another alias [#769, #775]

  • Remove lint warning for env followed by a pipe [#797]

  • Recognize proxychains as a precommand [#814, #914]

  • Honor shwordsplit when expanding parameters [#687, #818]

  • Skip highlighting when keys are still pending in more cases [#835]

  • Recognize grc as a precommand

  • Recognize torsocks and torift as precommands [#898]

  • Recognize cpulimit as a precommand [#897]

  • Recognize ktrace as a precommand

Changes in 0.8.0-alpha1-pre-redrawhook

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. [3ca93f864fb6]

  • Command separators in array assignments (foo=( bar | baz )) are now highlighted as errors. [#651, 81267ca3130c]

  • 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 [2cc2583f8f12, 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 [e165f18c758e]

  • 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 ionice as a precommand

  • 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]

  • Improve performance of the brackets highlighter.

  • Fix highlighting of pre-command redirections (e.g., the $fn in <$fn cat) [#712]

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 [4e6f60063f1c]

  • When a word uses globbing, only the globbing metacharacters will be highlighted as globbing: in : foo*bar, only the * will be blue. [e48af357532c]

  • Highlight pasted quotes (e.g., : foo"bar") [dc1b2f6fa4bb]

  • Highlight command substitutions (: `ls`, : $(ls)) [c0e64fe13178 and parents, e86f75a840e7, et al]

  • Highlight process substitutions (: >(nl), : <(pwd), : =(git diff)) [c0e64fe13178 and parents, e86f75a840e7, et al]

  • Highlight command substitutions inside double quotes (: "`foo`") [f16e858f0c83]

  • 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) [f3410c5862fc, 57386f30aec8, #544, and many others]

  • Highlight some more syntax errors [dea05e44e671, 298ef6a2fa30]

  • New styles: named file descriptors, RC_QUOTES, and unclosed quotes (e.g., echo "foo<CURSOR>) [38c794a978cd, 25ae1c01216c, 967335dfc5fd]

  • The 'brackets' highlighting no longer treats quotes specially. [ecdda36ef56f]

Selected bugfixes include:

  • Highlight sudo correctly when it's not installed [26a82113b08b]

  • Handle some non-default options being set in zshrc [b07ada1255b7, a2a899b41b8, 972ad197c13d, b3f66fc8748f]

  • Fix off-by-one highlighting in vi "visual" mode (vicmd keymap) [be3882aeb054]

  • The 'yank-pop' widget is not wrapped [#183]

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:

  • The isearch and suffix $zle_highlight settings. (79e4d3d12405, 15db71abd0cc, b56ee542d619; requires zsh 5.3 for $ISEARCHMATCH_ACTIVE / $SUFFIX_ACTIVE support)

  • Possible history expansions in double-quoted strings. (76ea9e1df316)

  • Mismatched if/then/elif/else/fi. (73cb83270262)

Fixed highlighting of:

  • A comment line followed by a non-comment line. (#385, 9396ad5c5f9c)

  • An unquoted $* (expands to the positional parameters). (237f89ad629f)

  • history-incremental-pattern-search-backward under zsh 5.3.1. (#407, #415, 462779629a0c)

API changes (for highlighter authors):

(none)

Developer-visible changes:

  • tests: Set the ALIAS_FUNC_DEF option for zsh 5.4 compatibility. (9523d6d49cb3)

Other changes:

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

  • docs: Link Fedora package. (3d74aa47e4a7, 5feed23962df)

  • docs: Link FreeBSD port. (626c034c68d7)

  • docs: Link OpenSUSE Build Service packages (#419, dea1fedc7358)

  • Prevent user-defined aliases from taking effect in z-sy-h's own code. (#390, 2dce602727d7, 8d5afe47f774; and #392, #395, b8fa1b9dc954)

  • docs: Update zplug installation instructions. (#399, 4f49c4a35f17)

  • Improve "unhandled ZLE widget 'foo'" error message. (#409, be083d7f3710)

  • Fix printing of "failed loading highlighters" error message. (#426, ad522a091429)

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, 02229ebd6328, ef4bfe5bcc14, #372/c6b6513ac0d6, #374/15461e7d21c3)

  • Command word highlighting: Use the zsh/parameter module to avoid forks. Memoize (cache) the results. (#298, 3ce01076b521, 2f18ba64e397, 12b879caf7a6; #320, 3b67e656bff5)

  • Avoid forks in the driver and in the root highlighter. (b9112aec798a, 38c8fbea2dd2)

Added highlighting of:

  • pkexec (a precommand). (#248, 4f3910cbbaa5)

  • Aliases that cannot be defined normally nor invoked normally (highlighted as an error). (#263 (in part), 28932316cca6)

  • Path separators (/) — the default behaviour remains to highlight path separators and path components the same way. (#136, #260, 6cd39e7c70d3, 9a934d291e7c, f3d3aaa00cc4)

  • Assignments to individual positional arguments (42=foo to assign to $42). (f4036a09cee3)

  • Linewise region (the visual-line-mode widget, bound to V in zsh's vi keymap). (#267, a7a7f8b42280, ee07588cfd9b)

  • Command-lines recalled by isearch mode; requires zsh≥5.3. (#261 (in part); #257; 4ad311ec0a68)

  • Command-lines whilst the IGNORE_BRACES or IGNORE_CLOSE_BRACES option is in effect. (a8a6384356af, 02807f1826a5)

  • Mismatched parentheses and braces (in the main highlighter). (51b9d79c3bb6, 2fabf7ca64b7, a4196eda5e6f, and others)

  • Mismatched do/done keywords. (b2733a64da93)

  • Mismatched foreach/end keywords. (#96, 2bb8f0703d8f)

  • 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 "$@" }. (6f91850a01e1)

  • always blocks. (#335, e5782e4ddfb6)

  • Command substitutions inside double quotes, "$(echo foo)". (#139 (in part), c3913e0d8ead)

  • Non-alphabetic parameters inside double quotes ("$$", "$#", "$*", "$@", "$?", "$-"). (4afe670f7a1b, 44ef6e38e5a7)

  • Command words from future versions of zsh (forward compatibly). This also adds an arg0 style that all other command word styles fall back to. (b4537a972eed, bccc3dc26943)

  • Escaped history expansions inside double quotes: : "\!" (28d7056a7a06, et seq)

Fixed highlighting of:

  • Command separator tokens in syntactically-invalid positions. (09c4114eb980)

  • Redirections with a file descriptor number at command word. (#238 (in part), 73ee7c1f6c4a)

  • The select prompt, $PS3. (#268, 451665cb2a8b)

  • Values of variables in vared. (e500ca246286)

  • ! as an argument (neither a history expansion nor a reserved word). (4c23a2fd1b90)

  • "division by zero" error under the brackets highlighter when $ZSH_HIGHLIGHT_STYLES is empty. (f73f3d53d3a6)

  • Process substitutions, <(pwd) and >(wc -l). (#302, 6889ff6bd2ad, bfabffbf975c, fc9c892a3f15)

  • The non-SHORT_LOOPS form of repeat loops: repeat 42; do true; done. (#290, 4832f18c50a5, ef68f50c048f, 6362c757b6f7)

  • Broken symlinks (are now highlighted as files). (#342, 95f7206a9373, 53083da8215e)

  • Lines accepted from isearch mode. (#284; #257, #259, #288; 5bae6219008b, a8fe22d42251)

  • 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, 51614ca2c994, fdaeec45146b, 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). (4c4baede519a)

  • The first word on a new line within an array assignment or initialization is no longer considered a command position. (8bf423d16d46)

  • Subshells that end at command position, (A=42), (true;). (#231, 7fb6f9979121; #344, 4fc35362ee5a)

  • Command word after array assignment, a=(lorem ipsum) pwd. (#330, 7fb6f9979121)

API changes (for highlighter authors):

  • New interface _zsh_highlight_add_highlight. (341a3ae1f015, c346f6eb6fb6)

  • tests: Specify the style key, not its value, in test expectations. (a830613467af, fd061b5730bf, eaa4335c3441, among others)

  • Module author documentation improvements. (#306 (in part), 217669270418, 0ff354b44b6e, 80148f6c8402, 364f206a547f, and others)

  • The driver no longer defines a _zsh_highlight_${highlighter}_highlighter_cache variable, which is in the highlighters' namespace. (3e59ab41b6b8, 80148f6c8402, f91a7b885e7d)

  • Rename highlighter entry points. The old names remain supported for backwards compatibility. (a3d5dfcbdae9, c793e0dceab1)

  • tests: Add the "NONE" expectation. (4da9889d1545, 13018f3dd735, d37c55c788cd)

  • tests: consider a test that writes to stderr to have failed. (#291, 1082067f9315)

Developer-visible changes:

  • Add make quiet-test. (9b64ad750f35)

  • test harness: Better quote replaceables in error messages. (30d8f92df225)

  • test harness: Fix exit code for XPASS. (bb8d325c0cbd)

  • Create HACKING.md. (cef49752fd0e)

  • tests: Emit a description for PASS test points. (6aa57d60aa64, f0bae44b76dd)

  • tests: Create a script that generates a test file. (8013dc3b8db6, et seq; tests/generate.zsh)

Other changes:

  • Under zsh≤5.2, widgets whose names start with a _ are no longer excluded from highlighting. (ed33d2cb1388; reverts part of 186d80054a40 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 776453cb5b69)

  • Under zsh≤5.2, shell-unsafe widget names can now be wrapped. (#278, 6a634fac9fb9, et seq)

  • Correct some test expectations. (78290e043bc5)

  • zsh-syntax-highlighting.plugin.zsh: Convert from symlink to plain file for msys2 compatibility. (#292, d4f8edc9f3ad)

  • Document installation under some plugin managers. (e635f766bef9, 9cab566f539b)

  • Don't leak the PATH_DIRS option. (7b82b88a7166)

  • Don't require the FUNCTION_ARGZERO option to be set. (#338, 750aebc553f2)

  • Under zsh≤5.2, support binding incomplete/nonexistent widgets. (9e569bb0fe04, part of #288)

  • Make the driver reentrant, fixing possibility of infinite recursion under zsh≤5.2 under interaction with theoretical third-party code. (#305, d711563fe1bf, 295d62ec888d, f3242cbd6aba)

  • Fix warnings when WARN_CREATE_GLOBAL is set prior to sourcing zsh-syntax-highlighting. (z-sy-h already sets WARN_CREATE_GLOBAL internally.) (da60234fb236)

  • Warn only once, rather than once per keypress, when a highlighter is unavailable. (0a9b347483ae)

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}). (282c7134e8ac, reverts c808d2187a73)

Changes in version 0.4.0

Added highlighting of:

  • incomplete sudo commands (a3047a912100, 2f05620b19ae)

    sudo;
sudo -u;

  • command words following reserved words (#207, #222, b397b12ac139 et seq, 6fbd2aa9579b et seq, 8b4adbd991b0)

    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, 693de99a9030)

    echo Hello # comment

  • closing brackets of arithmetic expansion, subshells, and blocks (#226, a59f442d2d34, et seq)

    (( foo ))
( foo )
{ foo }

  • command names enabled by the PATH_DIRS option (#228, 96ee5116b182)

    # 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, 6e3720f39d84)

    echo "${foo}"

  • parameter expansions in command word (#101, 4fcfb15913a2)

    x=/bin/ls
$x -l

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

    view file.pdf &!  ls

Fixed highlighting of:

  • precommand modifiers at non-command-word position (#209, 2c9f8c8c95fa)

    ls command foo

  • sudo commands with infix redirections (#221, be006aded590, 86e924970911)

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

  • subshells; anonymous functions (#166, #194, 0d1bfbcbfa67, 9e178f9f3948)

    (true)
() { true }

  • parameter assignment statements with no command (#205, 01d7eeb3c713)

    A=1;

    (The semicolon used to be highlighted as a mistake)

  • cursor highlighter: Remove the cursor highlighting when accepting a line. (#109, 4f0c293fdef0)

Removed features:

  • Removed highlighting of approximate paths (path_approx). (#187, 98aee7f8b9a3)

Other changes:

  • main highlighter refactored to use states rather than booleans. (2080a441ac49, et seq)

  • Fix initialization when sourcing zsh-syntax-highlighting.zsh via a symlink (083c47b00707)

  • docs: Add screenshot. (57624bb9f64b)

  • widgets wrapping: Don't add '--' when invoking widgets. (c808d2187a73) [reverted in 0.4.1]

  • Refresh highlighting upon accept-* widgets (accept-line et al). (59fbdda64c21)

  • Stop leaking match/mbegin/mend to global scope (thanks to upstream WARN_CREATE_GLOBAL improvements). (d3deffbf46a4)

  • 'make install': Permit setting $(SHARE_DIR) from the environment. (e1078a8b4cf1)

  • driver: Tolerate KSH_ARRAYS being set in the calling context. (#162, 8f19af6b319d)

  • 'make install': Install documentation fully and properly. (#219, b1619c001390, et seq)

  • docs: Improve 'main' highlighter's documentation. (00de155063f5, 7d4252f5f596)

  • docs: Moved to a new docs/ tree; assorted minor updates (c575f8f37567, 5b34c23cfad5, et seq)

  • docs: Split README.md into INSTALL.md (0b3183f6cb9a)

  • driver: Report $ZSH_HIGHLIGHT_REVISION when running from git (84734ba95026)

Developer-visible changes:

  • Test harness converted to TAP format (d99aa58aaaef, et seq)

  • Run each test in a separate subprocess, isolating them from each other (d99aa58aaaef, et seq)

  • Fix test failure with nonexisting $HOME (#216, b2ac98b98150)

  • Test output is now colorized. (4d3da30f8b72, 6fe07c096109)

  • Document make install (a18a7427fd2c)

  • tests: Allow specifying the zsh binary to use. (557bb7e0c6a0)

  • tests: Add 'make perf' target (4513eaea71d7)

  • tests: Run each test in a sandbox directory (c01533920245)

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.)