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driver: Run under emulate zsh
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‎driver.zsh‎

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# -------------------------------------------------------------------------------------------------
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# Copyright (c) 2010-2020 zsh-syntax-highlighting contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification, are permitted
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# provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this list of conditions
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# and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice, this list of
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# conditions and the following disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
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# may be used to endorse or promote products derived from this software without specific prior
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# written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# -------------------------------------------------------------------------------------------------
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# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
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# vim: ft=zsh sw=2 ts=2 et
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# -------------------------------------------------------------------------------------------------
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# Set $0 to the expected value, regardless of functionargzero.
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0=${(%):-%N}
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fpath+=(${0:P:h})
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if true; then
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# $0 is reliable
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typeset -g ZSH_HIGHLIGHT_VERSION=$(<"${0:A:h}"/.version)
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typeset -g ZSH_HIGHLIGHT_REVISION=$(<"${0:A:h}"/.revision-hash)
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if [[ $ZSH_HIGHLIGHT_REVISION == \$Format:* ]]; then
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# When running from a source tree without 'make install', $ZSH_HIGHLIGHT_REVISION
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# would be set to '$Format:%H$' literally. That's an invalid value, and obtaining
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# the valid value (via `git rev-parse HEAD`, as Makefile does) might be costly, so:
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ZSH_HIGHLIGHT_REVISION=HEAD
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fi
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fi
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# This function takes a single argument F and returns True iff F is an autoload stub.
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_zsh_highlight__function_is_autoload_stub_p() {
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if zmodload -e zsh/parameter; then
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#(( ${+functions[$1]} )) &&
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[[ "$functions[$1]" == *"builtin autoload -X"* ]]
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else
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#[[ $(type -wa -- "$1") == *'function'* ]] &&
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[[ "${${(@f)"$(which -- "$1")"}[2]}" == $'\t'$histchars[3]' undefined' ]]
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fi
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# Do nothing here: return the exit code of the if.
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}
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# Return True iff the argument denotes a function name.
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_zsh_highlight__is_function_p() {
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if zmodload -e zsh/parameter; then
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(( ${+functions[$1]} ))
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else
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[[ $(type -wa -- "$1") == *'function'* ]]
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fi
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}
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# This function takes a single argument F and returns True iff F denotes the
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# name of a callable function. A function is callable if it is fully defined
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# or if it is marked for autoloading and autoloading it at the first call to it
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# will succeed. In particular, if a function has been marked for autoloading
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# but is not available in $fpath, then this function will return False therefor.
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#
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# See users/21671 http://www.zsh.org/cgi-bin/mla/redirect?USERNUMBER=21671
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_zsh_highlight__function_callable_p() {
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if _zsh_highlight__is_function_p "$1" &&
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! _zsh_highlight__function_is_autoload_stub_p "$1"
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then
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# Already fully loaded.
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return 0 # true
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else
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# "$1" is either an autoload stub, or not a function at all.
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#
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# Use a subshell to avoid affecting the calling shell.
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#
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# We expect 'autoload +X' to return non-zero if it fails to fully load
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# the function.
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( autoload -U +X -- "$1" 2>/dev/null )
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return $?
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fi
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}
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# -------------------------------------------------------------------------------------------------
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# Core highlighting update system
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# -------------------------------------------------------------------------------------------------
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# Use workaround for bug in ZSH?
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# zsh-users/zsh@48cadf4 http://www.zsh.org/mla/workers//2017/msg00034.html
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autoload -Uz is-at-least
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if is-at-least 5.4; then
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typeset -g zsh_highlight__pat_static_bug=false
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else
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typeset -g zsh_highlight__pat_static_bug=true
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fi
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# Array declaring active highlighters names.
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typeset -ga ZSH_HIGHLIGHT_HIGHLIGHTERS
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# -------------------------------------------------------------------------------------------------
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# API/utility functions for highlighters
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# -------------------------------------------------------------------------------------------------
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# Array used by highlighters to declare user overridable styles.
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typeset -gA ZSH_HIGHLIGHT_STYLES
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# Whether the command line buffer has been modified or not.
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#
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# Returns 0 if the buffer has changed since _zsh_highlight was last called.
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_zsh_highlight_buffer_modified()
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{
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[[ "${_ZSH_HIGHLIGHT_PRIOR_BUFFER:-}" != "$BUFFER" ]]
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}
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# Whether the cursor has moved or not.
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#
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# Returns 0 if the cursor has moved since _zsh_highlight was last called.
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_zsh_highlight_cursor_moved()
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{
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[[ -n $CURSOR ]] && [[ -n ${_ZSH_HIGHLIGHT_PRIOR_CURSOR-} ]] && (($_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
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}
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# Add a highlight defined by ZSH_HIGHLIGHT_STYLES.
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#
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# Should be used by all highlighters aside from 'pattern' (cf. ZSH_HIGHLIGHT_PATTERN).
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# Overwritten in tests/test-highlighting.zsh when testing.
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_zsh_highlight_add_highlight()
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{
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local -i start end
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local highlight
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start=$1
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end=$2
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shift 2
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for highlight; do
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if (( $+ZSH_HIGHLIGHT_STYLES[$highlight] )); then
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region_highlight+=("$start $end $ZSH_HIGHLIGHT_STYLES[$highlight], memo=zsh-syntax-highlighting")
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break
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fi
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done
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}
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# -------------------------------------------------------------------------------------------------
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# Setup functions
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# -------------------------------------------------------------------------------------------------
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# Load highlighters from directory.
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#
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# Arguments:
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# 1) Path to the highlighters directory.
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_zsh_highlight_load_highlighters()
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{
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setopt localoptions noksharrays bareglobqual
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# Check the directory exists.
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[[ -d "$1" ]] || {
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print -r -- >&2 "zsh-syntax-highlighting: highlighters directory ${(qq)1} not found."
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return 1
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}
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# Load highlighters from highlighters directory and check they define required functions.
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local highlighter highlighter_dir
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for highlighter_dir ($1/*/(/)); do
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highlighter="${highlighter_dir:t}"
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[[ -f "$highlighter_dir${highlighter}-highlighter.zsh" ]] &&
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. "$highlighter_dir${highlighter}-highlighter.zsh"
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if [[ -f "${highlighter_dir}_zsh_highlight_highlighter_${highlighter}_paint" ]] &&
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[[ -f "${highlighter_dir}_zsh_highlight_highlighter_${highlighter}_predicate" ]]; then
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# New (0.8.0) autoload style highlighter
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fpath+=(${highlighter_dir%/})
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autoload -Uz "_zsh_highlight_highlighter_${highlighter}_paint" "_zsh_highlight_highlighter_${highlighter}_predicate"
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else
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if type "_zsh_highlight_highlighter_${highlighter}_paint" &> /dev/null &&
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type "_zsh_highlight_highlighter_${highlighter}_predicate" &> /dev/null;
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then
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# New (0.5.0) function names
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elif type "_zsh_highlight_${highlighter}_highlighter" &> /dev/null &&
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type "_zsh_highlight_${highlighter}_highlighter_predicate" &> /dev/null;
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then
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# Old (0.4.x) function names
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if false; then
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# TODO: only show this warning for plugin authors/maintainers, not for end users
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print -r -- >&2 "zsh-syntax-highlighting: warning: ${(qq)highlighter} highlighter uses deprecated entry point names; please ask its maintainer to update it: https://github.com/zsh-users/zsh-syntax-highlighting/issues/329"
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fi
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# Make it work.
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eval "_zsh_highlight_highlighter_${(q)highlighter}_paint() { _zsh_highlight_${(q)highlighter}_highlighter \"\$@\" }"
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eval "_zsh_highlight_highlighter_${(q)highlighter}_predicate() { _zsh_highlight_${(q)highlighter}_highlighter_predicate \"\$@\" }"
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else
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print -r -- >&2 "zsh-syntax-highlighting: ${(qq)highlighter} highlighter should define both required functions '_zsh_highlight_highlighter_${highlighter}_paint' and '_zsh_highlight_highlighter_${highlighter}_predicate' in ${(qq):-"$highlighter_dir${highlighter}-highlighter.zsh"}."
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fi
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fi
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done
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}
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# -------------------------------------------------------------------------------------------------
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# Setup
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# -------------------------------------------------------------------------------------------------
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autoload -Uz _zsh_highlight_internal
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# Resolve highlighters directory location.
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_zsh_highlight_load_highlighters "${ZSH_HIGHLIGHT_HIGHLIGHTERS_DIR:-${${0:A}:h}/highlighters}" || {
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print -r -- >&2 'zsh-syntax-highlighting: failed loading highlighters, exiting.'
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return 1
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}
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# Reset scratch variables when commandline is done.
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_zsh_highlight_preexec_hook()
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{
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typeset -g _ZSH_HIGHLIGHT_PRIOR_BUFFER=
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typeset -gi _ZSH_HIGHLIGHT_PRIOR_CURSOR=
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}
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autoload -Uz add-zsh-hook
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add-zsh-hook preexec _zsh_highlight_preexec_hook 2>/dev/null || {
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print -r -- >&2 'zsh-syntax-highlighting: failed loading add-zsh-hook.'
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}
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# Load zsh/parameter module if available
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zmodload zsh/parameter 2>/dev/null || true
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# Initialize the array of active highlighters if needed.
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[[ $#ZSH_HIGHLIGHT_HIGHLIGHTERS -eq 0 ]] && ZSH_HIGHLIGHT_HIGHLIGHTERS=(main)
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if (( $+X_ZSH_HIGHLIGHT_DIRS_BLACKLIST )); then
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print >&2 'zsh-syntax-highlighting: X_ZSH_HIGHLIGHT_DIRS_BLACKLIST is deprecated. Please use ZSH_HIGHLIGHT_DIRS_BLACKLIST.'
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ZSH_HIGHLIGHT_DIRS_BLACKLIST=($X_ZSH_HIGHLIGHT_DIRS_BLACKLIST)
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unset X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
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fi

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