# ------------------------------------------------------------------------------------------------- # Copyright (c) 2010-2020 zsh-syntax-highlighting contributors # All rights reserved. # # Redistribution and use in source and binary forms, with or without modification, are permitted # provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, this list of conditions # and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright notice, this list of # conditions and the following disclaimer in the documentation and/or other materials provided # with the distribution. # * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors # may be used to endorse or promote products derived from this software without specific prior # written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND # FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER # IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # ------------------------------------------------------------------------------------------------- # -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*- # vim: ft=zsh sw=2 ts=2 et # ------------------------------------------------------------------------------------------------- # Define default styles. : ${ZSH_HIGHLIGHT_STYLES[default]:=none} : ${ZSH_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold} : ${ZSH_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow} : ${ZSH_HIGHLIGHT_STYLES[suffix-alias]:=fg=green,underline} : ${ZSH_HIGHLIGHT_STYLES[global-alias]:=fg=cyan} : ${ZSH_HIGHLIGHT_STYLES[precommand]:=fg=green,underline} : ${ZSH_HIGHLIGHT_STYLES[commandseparator]:=none} : ${ZSH_HIGHLIGHT_STYLES[autodirectory]:=fg=green,underline} : ${ZSH_HIGHLIGHT_STYLES[path]:=underline} : ${ZSH_HIGHLIGHT_STYLES[path_pathseparator]:=} : ${ZSH_HIGHLIGHT_STYLES[path_prefix_pathseparator]:=} : ${ZSH_HIGHLIGHT_STYLES[globbing]:=fg=blue} : ${ZSH_HIGHLIGHT_STYLES[history-expansion]:=fg=blue} : ${ZSH_HIGHLIGHT_STYLES[command-substitution]:=none} : ${ZSH_HIGHLIGHT_STYLES[command-substitution-delimiter]:=fg=magenta} : ${ZSH_HIGHLIGHT_STYLES[process-substitution]:=none} : ${ZSH_HIGHLIGHT_STYLES[process-substitution-delimiter]:=fg=magenta} : ${ZSH_HIGHLIGHT_STYLES[single-hyphen-option]:=none} : ${ZSH_HIGHLIGHT_STYLES[double-hyphen-option]:=none} : ${ZSH_HIGHLIGHT_STYLES[back-quoted-argument]:=none} : ${ZSH_HIGHLIGHT_STYLES[back-quoted-argument-delimiter]:=fg=magenta} : ${ZSH_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow} : ${ZSH_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow} : ${ZSH_HIGHLIGHT_STYLES[dollar-quoted-argument]:=fg=yellow} : ${ZSH_HIGHLIGHT_STYLES[rc-quote]:=fg=cyan} : ${ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument]:=fg=cyan} : ${ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]:=fg=cyan} : ${ZSH_HIGHLIGHT_STYLES[back-dollar-quoted-argument]:=fg=cyan} : ${ZSH_HIGHLIGHT_STYLES[assign]:=none} : ${ZSH_HIGHLIGHT_STYLES[redirection]:=fg=yellow} : ${ZSH_HIGHLIGHT_STYLES[comment]:=fg=black,bold} : ${ZSH_HIGHLIGHT_STYLES[named-fd]:=none} : ${ZSH_HIGHLIGHT_STYLES[numeric-fd]:=none} : ${ZSH_HIGHLIGHT_STYLES[arg0]:=fg=green} # Whether the highlighter should be called or not. _zsh_highlight_highlighter_main_predicate() { # may need to remove path_prefix highlighting when the line ends [[ $WIDGET == zle-line-finish ]] || _zsh_highlight_buffer_modified } # Helper to deal with tokens crossing line boundaries. _zsh_highlight_main_add_region_highlight() { integer start=$1 end=$2 shift 2 if (( in_alias )); then [[ $1 == unknown-token ]] && alias_style=unknown-token return fi if (( in_param )); then if [[ $1 == unknown-token ]]; then param_style=unknown-token fi if [[ -n $param_style ]]; then return fi param_style=$1 return fi # The calculation was relative to $buf but region_highlight is relative to $BUFFER. (( start += buf_offset )) (( end += buf_offset )) list_highlights+=($start $end $1) } _zsh_highlight_main_add_many_region_highlights() { for 1 2 3; do _zsh_highlight_main_add_region_highlight $1 $2 $3 done } _zsh_highlight_main_calculate_fallback() { local -A fallback_of; fallback_of=( alias arg0 suffix-alias arg0 global-alias dollar-double-quoted-argument builtin arg0 function arg0 command arg0 precommand arg0 hashed-command arg0 autodirectory arg0 arg0_\* arg0 # TODO: Maybe these? — # named-fd file-descriptor # numeric-fd file-descriptor path_prefix path # The path separator fallback won't ever be used, due to the optimisation # in _zsh_highlight_main_highlighter_highlight_path_separators(). path_pathseparator path path_prefix_pathseparator path_prefix single-quoted-argument{-unclosed,} double-quoted-argument{-unclosed,} dollar-quoted-argument{-unclosed,} back-quoted-argument{-unclosed,} command-substitution{-quoted,,-unquoted,} command-substitution-delimiter{-quoted,,-unquoted,} command-substitution{-delimiter,} process-substitution{-delimiter,} back-quoted-argument{-delimiter,} ) local needle=$1 value reply=($1) while [[ -n ${value::=$fallback_of[(k)$needle]} ]]; do unset "fallback_of[$needle]" # paranoia against infinite loops reply+=($value) needle=$value done } # Get the type of a command. # # Uses the zsh/parameter module if available to avoid forks, and a # wrapper around 'type -w' as fallback. # # If $2 is 0, do not consider aliases. # # The result will be stored in REPLY. _zsh_highlight_main__type() { integer -r aliases_allowed=${2-1} # We won't cache replies of anything that exists as an alias at all, to # ensure the cached value is correct regardless of $aliases_allowed. # # ### We probably _should_ cache them in a cache that's keyed on the value of # ### $aliases_allowed, on the assumption that aliases are the common case. integer may_cache=1 # Cache lookup if (( $+_zsh_highlight_main__command_type_cache )); then REPLY=$_zsh_highlight_main__command_type_cache[(e)$1] if [[ -n "$REPLY" ]]; then return fi fi # Main logic if (( $#options_to_set )); then setopt localoptions $options_to_set; fi unset REPLY if zmodload -e zsh/parameter; then if (( $+aliases[(e)$1] )); then may_cache=0 fi if (( ${+galiases[(e)$1]} )) && (( aliases_allowed )); then REPLY='global alias' elif (( $+aliases[(e)$1] )) && (( aliases_allowed )); then REPLY=alias elif [[ $1 == *.* && -n ${1%.*} ]] && (( $+saliases[(e)${1##*.}] )); then REPLY='suffix alias' elif (( $reswords[(Ie)$1] )); then REPLY=reserved elif (( $+functions[(e)$1] )); then REPLY=function elif (( $+builtins[(e)$1] )); then REPLY=builtin elif (( $+commands[(e)$1] )); then REPLY=command # None of the special hashes had a match, so fall back to 'type -w', for # forward compatibility with future versions of zsh that may add new command # types. # # zsh 5.2 and older have a bug whereby running 'type -w ./sudo' implicitly # runs 'hash ./sudo=/usr/local/bin/./sudo' (assuming /usr/local/bin/sudo # exists and is in $PATH). Avoid triggering the bug, at the expense of # falling through to the $() below, incurring a fork. (Issue #354.) # # The first disjunct mimics the isrelative() C call from the zsh bug. elif { [[ $1 != */* ]] || is-at-least 5.3 } && # Add a subshell to avoid a zsh upstream bug; see issue #606. # ### Remove the subshell when we stop supporting zsh 5.7.1 (I assume 5.8 will have the bugfix). ! (builtin type -w -- "$1") >/dev/null 2>&1; then REPLY=none fi fi if ! (( $+REPLY )); then # zsh/parameter not available or had no matches. # # Note that 'type -w' will run 'rehash' implicitly. # # We 'unalias' in a subshell, so the parent shell is not affected. # # The colon command is there just to avoid a command substitution that # starts with an arithmetic expression [«((…))» as the first thing inside # «$(…)»], which is area that has had some parsing bugs before 5.6 # (approximately). REPLY="${$(:; (( aliases_allowed )) || unalias -- "$1" 2>/dev/null; LC_ALL=C builtin type -w -- "$1" 2>/dev/null)##*: }" if [[ $REPLY == 'alias' ]]; then may_cache=0 fi fi # Cache population if (( may_cache )) && (( $+_zsh_highlight_main__command_type_cache )); then _zsh_highlight_main__command_type_cache[(e)$1]=$REPLY fi [[ -n $REPLY ]] return $? } # Checks whether $1 is something that can be run. # # Return 0 if runnable, 1 if not runnable, 2 if trouble. _zsh_highlight_main__is_runnable() { if _zsh_highlight_main__type "$1"; then [[ $REPLY != none ]] else return 2 fi } # Check whether the first argument is a redirection operator token. # Report result via the exit code. _zsh_highlight_main__is_redirection() { # A redirection operator token: # - starts with an optional single-digit number; # - then, has a '<' or '>' character; # - is not a process substitution [<(...) or >(...)]. # - is not a numeric glob <-> [[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]] && [[ $1 != *'<'*'-'*'>'* ]] } # Resolve alias. # # Takes a single argument. # # The result will be stored in REPLY. _zsh_highlight_main__resolve_alias() { if zmodload -e zsh/parameter; then REPLY=${aliases[$arg]} else REPLY="${"$(alias -- $arg)"#*=}" fi } # Check that the top of $braces_stack has the expected value. If it does, set # the style according to $2; otherwise, set style=unknown-token. # # $1: character expected to be at the top of $braces_stack # $2: optional assignment to style it if matches # return value is 0 if there is a match else 1 _zsh_highlight_main__stack_pop() { if [[ $braces_stack[1] == $1 ]]; then braces_stack=${braces_stack:1} if (( $+2 )); then style=$2 fi return 0 else style=unknown-token return 1 fi } # Main syntax highlighting function. _zsh_highlight_highlighter_main_paint() { setopt localoptions extendedglob # At the PS3 prompt and in vared, highlight nothing. # # (We can't check this in _zsh_highlight_highlighter_main_predicate because # if the predicate returns false, the previous value of region_highlight # would be reused.) if [[ $CONTEXT == (select|vared) ]]; then return fi typeset -a ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR typeset -a ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW local -a options_to_set reply # used in callees local REPLY # $flags_with_argument is a set of letters, corresponding to the option letters # that would be followed by a colon in a getopts specification. local flags_with_argument # $flags_sans_argument is a set of letters, corresponding to the option letters # that wouldn't be followed by a colon in a getopts specification. local flags_sans_argument # $flags_solo is a set of letters, corresponding to option letters that, if # present, mean the precommand will now be acting as a precommand, i.e., will # not be followed by a :start: word. local flags_solo # $precommand_options maps precommand name to values of $flags_with_argument, # $flags_sans_argument, and flags_solo for that precommand, joined by a # colon. (The value is NOT a getopt(3) spec, although it resembles one.) # # Currently, setting $flags_sans_argument is only important for commands that # have a non-empty $flags_with_argument; see test-data/precommand4.zsh. local -A precommand_options precommand_options=( # Precommand modifiers as of zsh 5.6.2 cf. zshmisc(1). '-' '' 'builtin' '' 'command' :pvV 'exec' a:cl 'noglob' '' # 'time' and 'nocorrect' shouldn't be added here; they're reserved words, not precommands. 'doas' aCu:Lns # as of OpenBSD's doas(1) dated September 4, 2016 'nice' n: # as of current POSIX spec 'pkexec' '' # doesn't take short options; immune to #121 because it's usually not passed --option flags # Not listed: -h, which has two different meanings. 'sudo' Cgprtu:AEHPSbilns:eKkVv # as of sudo 1.8.21p2 'stdbuf' ioe: 'eatmydata' '' 'catchsegv' '' 'nohup' '' 'setsid' :wc # As of OpenSSH 8.1p1 'ssh-agent' aEPt:csDd:k # suckless-tools v44 # Argumentless flags that can't be followed by a command: -v 'tabbed' gnprtTuU:cdfhs # moreutils 0.62-1 'chronic' :ev 'ifne' :n ) # Commands that would need to skip one positional argument: # flock # ssh if [[ $zsyh_user_options[ignorebraces] == on || ${zsyh_user_options[ignoreclosebraces]:-off} == on ]]; then local right_brace_is_recognised_everywhere=false else local right_brace_is_recognised_everywhere=true fi if [[ $zsyh_user_options[pathdirs] == on ]]; then options_to_set+=( PATH_DIRS ) fi ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR=( '|' '||' ';' '&' '&&' $'\n' # ${(z)} returns ';' but we convert it to $'\n' '|&' '&!' '&|' # ### 'case' syntax, but followed by a pattern, not by a command # ';;' ';&' ';|' ) # Tokens that, at (naively-determined) "command position", are followed by # a de jure command position. All of these are reserved words. ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW=( $'\x7b' # block $'\x28' # subshell '()' # anonymous function 'while' 'until' 'if' 'then' 'elif' 'else' 'do' 'time' 'coproc' '!' # reserved word; unrelated to $histchars[1] ) if (( $+X_ZSH_HIGHLIGHT_DIRS_BLACKLIST )); then print >&2 'zsh-syntax-highlighting: X_ZSH_HIGHLIGHT_DIRS_BLACKLIST is deprecated. Please use ZSH_HIGHLIGHT_DIRS_BLACKLIST.' ZSH_HIGHLIGHT_DIRS_BLACKLIST=($X_ZSH_HIGHLIGHT_DIRS_BLACKLIST) unset X_ZSH_HIGHLIGHT_DIRS_BLACKLIST fi _zsh_highlight_main_highlighter_highlight_list -$#PREBUFFER '' 1 "$PREBUFFER$BUFFER" # end is a reserved word local start end_ style for start end_ style in $reply; do (( start >= end_ )) && { print -r -- >&2 "zsh-syntax-highlighting: BUG: _zsh_highlight_highlighter_main_paint: start($start) >= end($end_)"; return } (( end_ <= 0 )) && continue (( start < 0 )) && start=0 # having start<0 is normal with e.g. multiline strings _zsh_highlight_main_calculate_fallback $style _zsh_highlight_add_highlight $start $end_ $reply done } # $1 is the offset of $4 from the parent buffer. Added to the returned highlights. # $2 is the initial braces_stack (for a closing paren). # $3 is 1 if $4 contains the end of $BUFFER, else 0. # $4 is the buffer to highlight. # Returns: # $REPLY: $buf[REPLY] is the last character parsed. # $reply is an array of region_highlight additions. # exit code is 0 if the braces_stack is empty, 1 otherwise. _zsh_highlight_main_highlighter_highlight_list() { integer start_pos end_pos=0 buf_offset=$1 has_end=$3 # alias_style is the style to apply to an alias once in_alias=0 # Usually 'alias' but set to 'unknown-token' if any word expanded from # the alias would be highlighted as unknown-token # param_style is analogous for parameter expansions local alias_style param_style last_arg arg buf=$4 highlight_glob=true saw_assignment=false style local in_array_assignment=false # true between 'a=(' and the matching ')' # in_alias is equal to the number of shifts needed until arg=args[1] pops an # arg from BUFFER and not added by an alias. # in_param is analogous for parameter expansions integer in_alias=0 in_param=0 len=$#buf local -a match mbegin mend list_highlights # seen_alias is a map of aliases already seen to avoid loops like alias a=b b=a local -A seen_alias # Pattern for parameter names readonly parameter_name_pattern='([A-Za-z_][A-Za-z0-9_]*|[0-9]+)' list_highlights=() # "R" for round # "Q" for square # "Y" for curly # "T" for [[ ]] # "S" for $( ), =( ), <( ), >( ) # "D" for do/done # "$" for 'end' (matches 'foreach' always; also used with cshjunkiequotes in repeat/while) # "?" for 'if'/'fi'; also checked by 'elif'/'else' # ":" for 'then' local braces_stack=$2 # State machine # # The states are: # - :start: Command word # - :start_of_pipeline: Start of a 'pipeline' as defined in zshmisc(1). # Only valid when :start: is present # - :sudo_opt: A leading-dash option to a precommand, whether it takes an # argument or not. (Example: sudo's "-u" or "-i".) # - :sudo_arg: The argument to a precommand's leading-dash option, # when given as a separate word; i.e., "foo" in "-u foo" (two # words) but not in "-ufoo" (one word). # Note: :sudo_opt: and :sudo_arg: are used for any precommand # declared in ${precommand_options}, not just for sudo(8). # The naming is historical. # - :regular: "Not a command word", and command delimiters are permitted. # Mainly used to detect premature termination of commands. # - :always: The word 'always' in the «{ foo } always { bar }» syntax. # # When the kind of a word is not yet known, $this_word / $next_word may contain # multiple states. For example, after "sudo -i", the next word may be either # another --flag or a command name, hence the state would include both ':start:' # and ':sudo_opt:'. # # The tokens are always added with both leading and trailing colons to serve as # word delimiters (an improvised array); [[ $x == *':foo:'* ]] and x=${x//:foo:/} # will DTRT regardless of how many elements or repetitions $x has. # # Handling of redirections: upon seeing a redirection token, we must stall # the current state --- that is, the value of $this_word --- for two iterations # (one for the redirection operator, one for the word following it representing # the redirection target). Therefore, we set $in_redirection to 2 upon seeing a # redirection operator, decrement it each iteration, and stall the current state # when it is non-zero. Thus, upon reaching the next word (the one that follows # the redirection operator and target), $this_word will still contain values # appropriate for the word immediately following the word that preceded the # redirection operator. # # The "the previous word was a redirection operator" state is not communicated # to the next iteration via $next_word/$this_word as usual, but via # $in_redirection. The value of $next_word from the iteration that processed # the operator is discarded. # # $in_redirection is currently used for: # - comments # - aliases # - redirections # - parameter elision in command position # - 'repeat' loops # local this_word next_word=':start::start_of_pipeline:' integer in_redirection # Processing buffer local proc_buf="$buf" local -a args if [[ $zsyh_user_options[interactivecomments] == on ]]; then args=(${(zZ+c+)buf}) else args=(${(z)buf}) fi # Special case: $(<*) isn't globbing. if [[ $braces_stack == 'S' ]] && (( $+args[3] && ! $+args[4] )) && [[ $args[3] == $'\x29' ]] && [[ $args[1] == *'<'* ]] && _zsh_highlight_main__is_redirection $args[1]; then highlight_glob=false fi while (( $#args )); do last_arg=$arg arg=$args[1] shift args if (( in_alias )); then (( in_alias-- )) if (( in_alias == 0 )); then seen_alias=() # start_pos and end_pos are of the alias (previous $arg) here _zsh_highlight_main_add_region_highlight $start_pos $end_pos $alias_style fi fi if (( in_param )); then (( in_param-- )) if (( in_param == 0 )); then # start_pos and end_pos are of the '$foo' word (previous $arg) here _zsh_highlight_main_add_region_highlight $start_pos $end_pos $param_style param_style="" fi fi # Initialize this_word and next_word. if (( in_redirection == 0 )); then this_word=$next_word next_word=':regular:' else # Stall $next_word. (( --in_redirection )) fi # Initialize per-"simple command" [zshmisc(1)] variables: # # $style how to highlight $arg # $in_array_assignment boolean flag for "between '(' and ')' of array assignment" # $highlight_glob boolean flag for "'noglob' is in effect" # $saw_assignment boolean flag for "was preceded by an assignment" # style=unknown-token if [[ $this_word == *':start:'* ]]; then in_array_assignment=false if [[ $arg == 'noglob' ]]; then highlight_glob=false fi fi if (( in_alias == 0 && in_param == 0 )); then # Compute the new $start_pos and $end_pos, skipping over whitespace in $buf. [[ "$proc_buf" = (#b)(#s)(([ $'\t']|[\\]$'\n')#)(?|)* ]] # The first, outer parenthesis integer offset="${#match[1]}" (( start_pos = end_pos + offset )) (( end_pos = start_pos + $#arg )) # The zsh lexer considers ';' and newline to be the same token, so # ${(z)} converts all newlines to semicolons. Convert them back here to # make later processing simplier. [[ $arg == ';' && ${match[3]} == $'\n' ]] && arg=$'\n' # Compute the new $proc_buf. We advance it # (chop off characters from the beginning) # beyond what end_pos points to, by skipping # as many characters as end_pos was advanced. # # end_pos was advanced by $offset (via start_pos) # and by $#arg. Note the `start_pos=$end_pos` # below. # # As for the [,len]. We could use [,len-start_pos+offset] # here, but to make it easier on eyes, we use len and # rely on the fact that Zsh simply handles that. The # length of proc_buf is len-start_pos+offset because # we're chopping it to match current start_pos, so its # length matches the previous value of start_pos. # # Why [,-1] is slower than [,length] isn't clear. proc_buf="${proc_buf[offset + $#arg + 1,len]}" fi # Handle the INTERACTIVE_COMMENTS option. # # We use the (Z+c+) flag so the entire comment is presented as one token in $arg. if [[ $zsyh_user_options[interactivecomments] == on && $arg[1] == $histchars[3] ]]; then if [[ $this_word == *(':regular:'|':start:')* ]]; then style=comment else style=unknown-token # prematurely terminated fi _zsh_highlight_main_add_region_highlight $start_pos $end_pos $style # Stall this arg in_redirection=1 continue fi if [[ $this_word == *':start:'* ]] && ! (( in_redirection )); then # Expand aliases. # An alias is ineligible for expansion while it's being expanded (see #652/#653). _zsh_highlight_main__type "$arg" "$(( ! ${+seen_alias[$arg]} ))" local res="$REPLY" if [[ $res == "alias" ]]; then # Mark insane aliases as unknown-token (cf. #263). if [[ $arg == ?*=* ]]; then (( in_alias == 0 )) && in_alias=1 _zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token continue fi seen_alias[$arg]=1 _zsh_highlight_main__resolve_alias $arg local -a alias_args # Elision is desired in case alias x='' if [[ $zsyh_user_options[interactivecomments] == on ]]; then alias_args=(${(zZ+c+)REPLY}) else alias_args=(${(z)REPLY}) fi args=( $alias_args $args ) if (( in_alias == 0 )); then alias_style=alias # Add one because we will in_alias-- on the next loop iteration so # this iteration should be considered in in_alias as well (( in_alias += $#alias_args + 1 )) else # This arg is already included in the count, so no need to + 1. (( in_alias += $#alias_args )) fi (( in_redirection++ )) # Stall this arg continue else _zsh_highlight_main_highlighter_expand_path $arg _zsh_highlight_main__type "$REPLY" 0 res="$REPLY" fi fi # Analyse the current word. if _zsh_highlight_main__is_redirection $arg ; then if (( in_redirection == 1 )); then # Two consecuive redirection operators is an error. _zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token else in_redirection=2 _zsh_highlight_main_add_region_highlight $start_pos $end_pos redirection fi continue elif [[ $arg == '{'${~parameter_name_pattern}'}' ]] && _zsh_highlight_main__is_redirection $args[1]; then # named file descriptor: {foo}>&2 in_redirection=3 _zsh_highlight_main_add_region_highlight $start_pos $end_pos named-fd continue fi # Expand parameters. # # ### For now, expand just '$foo' or '${foo}', possibly with braces, but with # ### no other features of the parameter expansion syntax. (No ${(x)foo}, # ### no ${foo[x]}, no ${foo:-x}.) () { # That's not entirely correct --- if the parameter's value happens to be a reserved # word, the parameter expansion will be highlighted as a reserved word --- but that # incorrectness is outweighed by the usability improvement of permitting the use of # parameters that refer to commands, functions, and builtins. local -a match mbegin mend local MATCH; integer MBEGIN MEND local parameter_name local -a words if [[ $arg[1] == '$' ]] && [[ ${arg[2]} == '{' ]] && [[ ${arg[-1]} == '}' ]]; then parameter_name=${${arg:2}%?} elif [[ $arg[1] == '$' ]]; then parameter_name=${arg:1} fi if [[ $res == none ]] && zmodload -e zsh/parameter && [[ ${parameter_name} =~ ^${~parameter_name_pattern}$ ]] && [[ ${parameters[(e)$MATCH]} != *special* ]] then # Set $arg and update $res. case ${(tP)MATCH} in (*array*|*assoc*) words=( ${(P)MATCH} ) ;; ("") # not set words=( ) ;; (*) # scalar, presumably words=( ${(P)MATCH} ) ;; esac if (( $#words == 0 )); then # Parameter elision is happening (( ++in_redirection )) _zsh_highlight_main_add_region_highlight $start_pos $end_pos comment continue else (( in_param = 1 + $#words )) args=( $words $args ) arg=$args[1] _zsh_highlight_main__type "$arg" 0 res=$REPLY fi fi } # Parse the sudo command line if (( ! in_redirection )); then if [[ $this_word == *':sudo_opt:'* ]]; then if [[ -n $flags_with_argument ]] && { # Trenary if [[ -n $flags_sans_argument ]] then [[ $arg == '-'[$flags_sans_argument]#[$flags_with_argument] ]] else [[ $arg == '-'[$flags_with_argument] ]] fi } then # Flag that requires an argument this_word=${this_word//:start:/} next_word=':sudo_arg:' elif [[ -n $flags_with_argument ]] && { # Trenary if [[ -n $flags_sans_argument ]] then [[ $arg == '-'[$flags_sans_argument]#[$flags_with_argument]* ]] else [[ $arg == '-'[$flags_with_argument]* ]] fi } then # Argument attached in the same word this_word=${this_word//:start:/} next_word+=':start:' next_word+=':sudo_opt:' elif [[ -n $flags_sans_argument ]] && [[ $arg == '-'[$flags_sans_argument]# ]]; then # Flag that requires no argument this_word=':sudo_opt:' next_word+=':start:' next_word+=':sudo_opt:' elif [[ -n $flags_solo ]] && { # Trenary if [[ -n $flags_sans_argument ]] then [[ $arg == '-'[$flags_sans_argument]#[$flags_solo]* ]] else [[ $arg == '-'[$flags_solo]* ]] fi } then # Solo flags this_word=':sudo_opt:' next_word=':regular:' # no :start:, nor :sudo_opt: since we don't know whether the solo flag takes an argument or not elif [[ $arg == '-'* ]]; then # Unknown flag. We don't know whether it takes an argument or not, # so modify $next_word as we do for flags that require no argument. # With that behaviour, if the flag in fact takes no argument we'll # highlight the inner command word correctly, and if it does take an # argument we'll highlight the command word correctly if the argument # was given in the same shell word as the flag (as in '-uphy1729' or # '--user=phy1729' without spaces). this_word=':sudo_opt:' next_word+=':start:' next_word+=':sudo_opt:' else # Not an option flag; nothing to do. (If the command line is # syntactically valid, ${this_word//:sudo_opt:/} should be # non-empty now.) this_word=${this_word//:sudo_opt:/} fi elif [[ $this_word == *':sudo_arg:'* ]]; then next_word+=':sudo_opt:' next_word+=':start:' fi fi # The Great Fork: is this a command word? Is this a non-command word? if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]] && [[ $braces_stack != *T* || $arg != ('||'|'&&') ]]; then # First, determine the style of the command separator itself. if _zsh_highlight_main__stack_pop T || _zsh_highlight_main__stack_pop Q; then # Missing closing square bracket(s) style=unknown-token elif $in_array_assignment; then case $arg in # Literal newlines are just fine. ($'\n') style=commandseparator;; # Semicolons are parsed the same way as literal newlines. Nevertheless, # highlight them as errors since they're probably unintended. Compare # issue #691. (';') style=unknown-token;; # Other command separators aren't allowed. (*) style=unknown-token;; esac elif [[ $this_word == *':regular:'* ]]; then style=commandseparator elif [[ $this_word == *':start:'* ]] && [[ $arg == $'\n' ]]; then style=commandseparator else # This highlights empty commands (semicolon follows nothing) as an error. # Zsh accepts them, though. style=unknown-token fi # Second, determine the style of next_word. if [[ $arg == $'\n' ]] && $in_array_assignment; then # literal newline inside an array assignment next_word=':regular:' elif [[ $arg == ';' ]] && $in_array_assignment; then # literal semicolon inside an array assignment next_word=':regular:' else next_word=':start:' highlight_glob=true saw_assignment=false if [[ $arg != '|' && $arg != '|&' ]]; then next_word+=':start_of_pipeline:' fi fi elif ! (( in_redirection)) && [[ $this_word == *':always:'* && $arg == 'always' ]]; then # try-always construct style=reserved-word # de facto a reserved word, although not de jure highlight_glob=true saw_assignment=false next_word=':start::start_of_pipeline:' # only left brace is allowed, apparently elif ! (( in_redirection)) && [[ $this_word == *':start:'* ]]; then # $arg is the command word if (( ${+precommand_options[$arg]} )) && _zsh_highlight_main__is_runnable $arg; then style=precommand () { set -- "${(@s.:.)precommand_options[$arg]}" flags_with_argument=$1 flags_sans_argument=$2 flags_solo=$3 } next_word=${next_word//:regular:/} next_word+=':sudo_opt:' next_word+=':start:' if [[ $arg == 'exec' ]]; then # To allow "exec 2>&1;" where there's no command word next_word+=':regular:' fi else case $res in (reserved) # reserved word style=reserved-word # Match braces and handle special cases. case $arg in (time|nocorrect) next_word=${next_word//:regular:/} next_word+=':start:' ;; ($'\x7b') braces_stack='Y'"$braces_stack" ;; ($'\x7d') # We're at command word, so no need to check $right_brace_is_recognised_everywhere _zsh_highlight_main__stack_pop 'Y' reserved-word if [[ $style == reserved-word ]]; then next_word+=':always:' fi ;; ($'\x5b\x5b') braces_stack='T'"$braces_stack" ;; ('do') braces_stack='D'"$braces_stack" ;; ('done') _zsh_highlight_main__stack_pop 'D' reserved-word ;; ('if') braces_stack=':?'"$braces_stack" ;; ('then') _zsh_highlight_main__stack_pop ':' reserved-word ;; ('elif') if [[ ${braces_stack[1]} == '?' ]]; then braces_stack=':'"$braces_stack" else style=unknown-token fi ;; ('else') if [[ ${braces_stack[1]} == '?' ]]; then : else style=unknown-token fi ;; ('fi') _zsh_highlight_main__stack_pop '?' ;; ('foreach') braces_stack='$'"$braces_stack" ;; ('end') _zsh_highlight_main__stack_pop '$' reserved-word ;; ('repeat') # skip the repeat-count word in_redirection=2 # The redirection mechanism assumes $this_word describes the word # following the redirection. Make it so. # # That word can be a command word with shortloops (`repeat 2 ls`) # or a command separator (`repeat 2; ls` or `repeat 2; do ls; done`). # # The repeat-count word will be handled like a redirection target. this_word=':start::regular:' ;; ('!') if [[ $this_word != *':start_of_pipeline:'* ]]; then style=unknown-token else # '!' reserved word at start of pipeline; style already set above fi ;; esac if $saw_assignment && [[ $style != unknown-token ]]; then style=unknown-token fi ;; ('suffix alias') style=suffix-alias ;; ('global alias') style=global-alias ;; (alias) :;; (builtin) style=builtin [[ $arg == $'\x5b' ]] && braces_stack='Q'"$braces_stack" ;; (function) style=function;; (command) style=command;; (hashed) style=hashed-command;; (none) if (( ! in_param )) && _zsh_highlight_main_highlighter_check_assign; then _zsh_highlight_main_add_region_highlight $start_pos $end_pos assign local i=$(( arg[(i)=] + 1 )) saw_assignment=true if [[ $arg[i] == '(' ]]; then in_array_assignment=true else # assignment to a scalar parameter. # (For array assignments, the command doesn't start until the ")" token.) # # Discard :start_of_pipeline:, if present, as '!' is not valid # after assignments. next_word+=':start:' if (( i <= $#arg )); then () { local highlight_glob=false [[ $zsyh_user_options[globassign] == on ]] && highlight_glob=true _zsh_highlight_main_highlighter_highlight_argument $i } fi fi continue elif (( ! in_param )) && [[ $arg[0,1] = $histchars[0,1] ]] && (( $#arg[0,2] == 2 )); then style=history-expansion elif (( ! in_param )) && [[ $arg[0,1] == $histchars[2,2] ]]; then style=history-expansion elif (( ! in_param )) && ! $saw_assignment && [[ $arg[1,2] == '((' ]]; then # Arithmetic evaluation. # # Note: prior to zsh-5.1.1-52-g4bed2cf (workers/36669), the ${(z)...} # splitter would only output the '((' token if the matching '))' had # been typed. Therefore, under those versions of zsh, BUFFER="(( 42" # would be highlighted as an error until the matching "))" are typed. # # We highlight just the opening parentheses, as a reserved word; this # is how [[ ... ]] is highlighted, too. _zsh_highlight_main_add_region_highlight $start_pos $((start_pos + 2)) reserved-word if [[ $arg[-2,-1] == '))' ]]; then _zsh_highlight_main_add_region_highlight $((end_pos - 2)) $end_pos reserved-word fi continue elif (( ! in_param )) && [[ $arg == '()' ]]; then # anonymous function style=reserved-word elif (( ! in_param )) && ! $saw_assignment && [[ $arg == $'\x28' ]]; then # subshell style=reserved-word braces_stack='R'"$braces_stack" elif (( ! in_param )) && [[ $arg == $'\x29' ]]; then # end of subshell or command substitution if _zsh_highlight_main__stack_pop 'S'; then REPLY=$start_pos reply=($list_highlights) return 0 fi _zsh_highlight_main__stack_pop 'R' reserved-word else if _zsh_highlight_main_highlighter_check_path $arg 1; then style=$REPLY else style=unknown-token fi fi ;; (*) _zsh_highlight_main_add_region_highlight $start_pos $end_pos arg0_$res continue ;; esac fi if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW:#"$arg"} ]]; then next_word=':start::start_of_pipeline:' fi elif _zsh_highlight_main__type "$arg"; [[ $REPLY == 'global alias' ]]; then # $arg is a global alias that isn't in command position style=global-alias else # $arg is a non-command word case $arg in ($'\x29') # subshell or end of array assignment if $in_array_assignment; then style=assign in_array_assignment=false next_word+=':start:' elif (( in_redirection )); then style=unknown-token else if _zsh_highlight_main__stack_pop 'S'; then REPLY=$start_pos reply=($list_highlights) return 0 fi _zsh_highlight_main__stack_pop 'R' reserved-word fi ;; ($'\x28\x29') # possibly a function definition if (( in_redirection )) || $in_array_assignment; then style=unknown-token else if [[ $zsyh_user_options[multifuncdef] == on ]] || false # TODO: or if the previous word was a command word then next_word+=':start::start_of_pipeline:' fi style=reserved-word fi ;; (*) if false; then elif [[ $arg = $'\x7d' ]] && $right_brace_is_recognised_everywhere; then # Parsing rule: { # # Additionally, `tt(})' is recognized in any position if neither the # tt(IGNORE_BRACES) option nor the tt(IGNORE_CLOSE_BRACES) option is set. if (( in_redirection )) || $in_array_assignment; then style=unknown-token else _zsh_highlight_main__stack_pop 'Y' reserved-word if [[ $style == reserved-word ]]; then next_word+=':always:' fi fi elif [[ $arg[0,1] = $histchars[0,1] ]] && (( $#arg[0,2] == 2 )); then style=history-expansion elif [[ $arg == $'\x5d\x5d' ]] && _zsh_highlight_main__stack_pop 'T' reserved-word; then : elif [[ $arg == $'\x5d' ]] && _zsh_highlight_main__stack_pop 'Q' builtin; then : else _zsh_highlight_main_highlighter_highlight_argument 1 $(( 1 != in_redirection )) continue fi ;; esac fi _zsh_highlight_main_add_region_highlight $start_pos $end_pos $style done (( in_alias == 1 )) && in_alias=0 _zsh_highlight_main_add_region_highlight $start_pos $end_pos $alias_style (( in_param == 1 )) && in_param=0 _zsh_highlight_main_add_region_highlight $start_pos $end_pos $param_style [[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\$'\n')#) ]] REPLY=$(( end_pos + ${#match[1]} - 1 )) reply=($list_highlights) return $(( $#braces_stack > 0 )) } # Check if $arg is variable assignment _zsh_highlight_main_highlighter_check_assign() { setopt localoptions extended_glob [[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[*\])(|[+])=* ]] || [[ $arg == [0-9]##(|[+])=* ]] } _zsh_highlight_main_highlighter_highlight_path_separators() { local pos style_pathsep style_pathsep=$1_pathseparator reply=() [[ -z "$ZSH_HIGHLIGHT_STYLES[$style_pathsep]" || "$ZSH_HIGHLIGHT_STYLES[$1]" == "$ZSH_HIGHLIGHT_STYLES[$style_pathsep]" ]] && return 0 for (( pos = start_pos; $pos <= end_pos; pos++ )) ; do if [[ $BUFFER[pos] == / ]]; then reply+=($((pos - 1)) $pos $style_pathsep) fi done } # Check if $1 is a path. # If yes, return 0 and in $REPLY the style to use. # Else, return non-zero (and the contents of $REPLY is undefined). # # $2 should be non-zero iff we're in command position. _zsh_highlight_main_highlighter_check_path() { _zsh_highlight_main_highlighter_expand_path "$1" local expanded_path="$REPLY" tmp_path integer in_command_position=$2 if [[ $zsyh_user_options[autocd] == on ]]; then integer autocd=1 else integer autocd=0 fi if (( in_command_position )); then # ### Currently, this value is never returned: either it's overwritten # ### below, or the return code is non-zero REPLY=arg0 else REPLY=path fi if [[ ${1[1]} == '=' && $1 == ??* && ${1[2]} != $'\x28' && $zsyh_user_options[equals] == 'on' && $expanded_path[1] != '/' ]]; then REPLY=unknown-token # will error out if executed return 0 fi [[ -z $expanded_path ]] && return 1 # Check if this is a blacklisted path if [[ $expanded_path[1] == / ]]; then tmp_path=$expanded_path else tmp_path=$PWD/$expanded_path fi tmp_path=$tmp_path:a while [[ $tmp_path != / ]]; do [[ -n ${(M)ZSH_HIGHLIGHT_DIRS_BLACKLIST:#$tmp_path} ]] && return 1 tmp_path=$tmp_path:h done if (( in_command_position )); then if [[ -x $expanded_path ]]; then if (( autocd )); then if [[ -d $expanded_path ]]; then REPLY=autodirectory fi return 0 elif [[ ! -d $expanded_path ]]; then # ### This seems unreachable for the current callers return 0 fi fi else if [[ -L $expanded_path || -e $expanded_path ]]; then return 0 fi fi # Search the path in CDPATH if [[ $expanded_path != /* ]] && (( autocd || ! in_command_position )); then # TODO: When we've dropped support for pre-5.0.6 zsh, use the *(Y1) glob qualifier here. local cdpath_dir for cdpath_dir in $cdpath ; do if [[ -d "$cdpath_dir/$expanded_path" && -x "$cdpath_dir/$expanded_path" ]]; then if (( in_command_position && autocd )); then REPLY=autodirectory fi return 0 fi done fi # If dirname($1) doesn't exist, neither does $1. [[ ! -d ${expanded_path:h} ]] && return 1 # If this word ends the buffer, check if it's the prefix of a valid path. if (( has_end && (len == end_pos) )) && (( ! in_alias )) && [[ $WIDGET != zle-line-finish ]]; then # TODO: When we've dropped support for pre-5.0.6 zsh, use the *(Y1) glob qualifier here. local -a tmp if (( in_command_position )); then # We include directories even when autocd is enabled, because those # directories might contain executable files: e.g., BUFFER="/bi" en route # to typing "/bin/sh". tmp=( ${expanded_path}*(N-*,N-/) ) else tmp=( ${expanded_path}*(N) ) fi (( ${+tmp[1]} )) && REPLY=path_prefix && return 0 fi # It's not a path. return 1 } # Highlight an argument and possibly special chars in quotes starting at $1 in $arg # This command will at least highlight $1 to end_pos with the default style # If $2 is set to 0, the argument cannot be highlighted as an option. # # This function currently assumes it's never called for the command word. _zsh_highlight_main_highlighter_highlight_argument() { local base_style=default i=$1 option_eligible=${2:-1} path_eligible=1 ret start style local -a highlights local -a match mbegin mend local MATCH; integer MBEGIN MEND case "$arg[i]" in '%') if [[ $arg[i+1] == '?' ]]; then (( i += 2 )) fi ;; '-') if (( option_eligible )); then if [[ $arg[i+1] == - ]]; then base_style=double-hyphen-option else base_style=single-hyphen-option fi path_eligible=0 fi ;; '=') if [[ $arg[i+1] == $'\x28' ]]; then (( i += 2 )) _zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,-1] ret=$? (( i += REPLY )) highlights+=( $(( start_pos + $1 - 1 )) $(( start_pos + i )) process-substitution $(( start_pos + $1 - 1 )) $(( start_pos + $1 + 1 )) process-substitution-delimiter $reply ) if (( ret == 0 )); then highlights+=($(( start_pos + i - 1 )) $(( start_pos + i )) process-substitution-delimiter) fi fi esac for (( ; i <= $#arg ; i += 1 )); do case "$arg[$i]" in "\\") (( i += 1 )); continue;; "'") _zsh_highlight_main_highlighter_highlight_single_quote $i (( i = REPLY )) highlights+=($reply) ;; '"') _zsh_highlight_main_highlighter_highlight_double_quote $i (( i = REPLY )) highlights+=($reply) ;; '`') _zsh_highlight_main_highlighter_highlight_backtick $i (( i = REPLY )) highlights+=($reply) ;; '$') if [[ $arg[i+1] != "'" ]]; then path_eligible=0 fi if [[ $arg[i+1] == "'" ]]; then _zsh_highlight_main_highlighter_highlight_dollar_quote $i (( i = REPLY )) highlights+=($reply) continue elif [[ $arg[i+1] == $'\x28' && ${arg:$i} != $'\x28\x28'*$'\x29\x29'* ]]; then # command substitution that doesn't look like an arithmetic expansion start=$i (( i += 2 )) _zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,-1] ret=$? (( i += REPLY )) highlights+=( $(( start_pos + start - 1)) $(( start_pos + i )) command-substitution-unquoted $(( start_pos + start - 1)) $(( start_pos + start + 1)) command-substitution-delimiter-unquoted $reply ) if (( ret == 0 )); then highlights+=($(( start_pos + i - 1)) $(( start_pos + i )) command-substitution-delimiter-unquoted) fi continue else # TODO: if it's an arithmetic expansion, skip past it, to prevent # multiplications from being highlighted as globbing (issue #607, # test-data/arith1.zsh) fi while [[ $arg[i+1] == [=~#+'^'] ]]; do (( i += 1 )) done if [[ $arg[i+1] == [*@#?$!-] ]]; then (( i += 1 )) fi;; [\<\>]) if [[ $arg[i+1] == $'\x28' ]]; then # \x28 = open paren start=$i (( i += 2 )) _zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,-1] ret=$? (( i += REPLY )) highlights+=( $(( start_pos + start - 1)) $(( start_pos + i )) process-substitution $(( start_pos + start - 1)) $(( start_pos + start + 1 )) process-substitution-delimiter $reply ) if (( ret == 0 )); then highlights+=($(( start_pos + i - 1)) $(( start_pos + i )) process-substitution-delimiter) fi continue fi ;| *) if $highlight_glob && [[ $zsyh_user_options[multios] == on || $in_redirection -eq 0 ]] && [[ ${arg[$i]} =~ ^[*?] || ${arg:$i-1} =~ ^\<[0-9]*-[0-9]*\> ]]; then highlights+=($(( start_pos + i - 1 )) $(( start_pos + i + $#MATCH - 1)) globbing) (( i += $#MATCH - 1 )) path_eligible=0 else continue fi ;; esac done if (( path_eligible )); then if (( in_redirection )) && [[ $last_arg == *['<>']['&'] && $arg[$1,-1] == (<0->|p|-) ]]; then if [[ $arg[$1,-1] == (p|-) ]]; then base_style=redirection else base_style=numeric-fd fi # This function is currently never called for the command word, so $2 is hard-coded as 0. elif _zsh_highlight_main_highlighter_check_path $arg[$1,-1] 0; then base_style=$REPLY _zsh_highlight_main_highlighter_highlight_path_separators $base_style highlights+=($reply) fi fi highlights=($(( start_pos + $1 - 1 )) $end_pos $base_style $highlights) _zsh_highlight_main_add_many_region_highlights $highlights } # Quote Helper Functions # # $arg is expected to be set to the current argument # $start_pos is expected to be set to the start of $arg in $BUFFER # $1 is the index in $arg which starts the quote # $REPLY is returned as the end of quote index in $arg # $reply is returned as an array of region_highlight additions # Highlight single-quoted strings _zsh_highlight_main_highlighter_highlight_single_quote() { local arg1=$1 i q=\' style i=$arg[(ib:arg1+1:)$q] reply=() if [[ $zsyh_user_options[rcquotes] == on ]]; then while [[ $arg[i+1] == "'" ]]; do reply+=($(( start_pos + i - 1 )) $(( start_pos + i + 1 )) rc-quote) (( i++ )) i=$arg[(ib:i+1:)$q] done fi if [[ $arg[i] == "'" ]]; then style=single-quoted-argument else # If unclosed, i points past the end (( i-- )) style=single-quoted-argument-unclosed fi reply=($(( start_pos + arg1 - 1 )) $(( start_pos + i )) $style $reply) REPLY=$i } # Highlight special chars inside double-quoted strings _zsh_highlight_main_highlighter_highlight_double_quote() { local -a breaks match mbegin mend saved_reply local MATCH; integer last_break=$(( start_pos + $1 - 1 )) MBEGIN MEND local i j k ret style reply=() for (( i = $1 + 1 ; i <= $#arg ; i += 1 )) ; do (( j = i + start_pos - 1 )) (( k = j + 1 )) case "$arg[$i]" in ('"') break;; ('`') saved_reply=($reply) _zsh_highlight_main_highlighter_highlight_backtick $i (( i = REPLY )) reply=($saved_reply $reply) continue ;; ('$') style=dollar-double-quoted-argument # Look for an alphanumeric parameter name. if [[ ${arg:$i} =~ ^([A-Za-z_][A-Za-z0-9_]*|[0-9]+) ]] ; then (( k += $#MATCH )) # highlight the parameter name (( i += $#MATCH )) # skip past it elif [[ ${arg:$i} =~ ^[{]([A-Za-z_][A-Za-z0-9_]*|[0-9]+)[}] ]] ; then (( k += $#MATCH )) # highlight the parameter name and braces (( i += $#MATCH )) # skip past it elif [[ $arg[i+1] == '$' ]]; then # $$ - pid (( k += 1 )) # highlight both dollar signs (( i += 1 )) # don't consider the second one as introducing another parameter expansion elif [[ $arg[i+1] == [-#*@?] ]]; then # $#, $*, $@, $?, $- - like $$ above (( k += 1 )) # highlight both dollar signs (( i += 1 )) # don't consider the second one as introducing another parameter expansion elif [[ $arg[i+1] == $'\x28' && ${arg:$i} != $'\x28\x28'*$'\x29\x29'* ]]; then # command substitution that doesn't look like an arithmetic expansion breaks+=( $last_break $(( start_pos + i - 1 )) ) (( i += 2 )) saved_reply=($reply) _zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,-1] ret=$? (( i += REPLY )) last_break=$(( start_pos + i )) reply=( $saved_reply $j $(( start_pos + i )) command-substitution-quoted $j $(( j + 2 )) command-substitution-delimiter-quoted $reply ) if (( ret == 0 )); then reply+=($(( start_pos + i - 1 )) $(( start_pos + i )) command-substitution-delimiter-quoted) fi continue else continue fi ;; "\\") style=back-double-quoted-argument if [[ \\\`\"\$${histchars[1]} == *$arg[$i+1]* ]]; then (( k += 1 )) # Color following char too. (( i += 1 )) # Skip parsing the escaped char. else continue fi ;; ($histchars[1]) # ! - may be a history expansion if [[ $arg[i+1] != ('='|$'\x28'|$'\x7b'|[[:blank:]]) ]]; then style=history-expansion else continue fi ;; *) continue ;; esac reply+=($j $k $style) done if [[ $arg[i] == '"' ]]; then style=double-quoted-argument else # If unclosed, i points past the end (( i-- )) style=double-quoted-argument-unclosed fi (( last_break != start_pos + i )) && breaks+=( $last_break $(( start_pos + i )) ) saved_reply=($reply) reply=() for 1 2 in $breaks; do (( $1 != $2 )) && reply+=($1 $2 $style) done reply+=($saved_reply) REPLY=$i } # Highlight special chars inside dollar-quoted strings _zsh_highlight_main_highlighter_highlight_dollar_quote() { local -a match mbegin mend local MATCH; integer MBEGIN MEND local i j k style local AA integer c reply=() for (( i = $1 + 2 ; i <= $#arg ; i += 1 )) ; do (( j = i + start_pos - 1 )) (( k = j + 1 )) case "$arg[$i]" in "'") break;; "\\") style=back-dollar-quoted-argument for (( c = i + 1 ; c <= $#arg ; c += 1 )); do [[ "$arg[$c]" != ([0-9xXuUa-fA-F]) ]] && break done AA=$arg[$i+1,$c-1] # Matching for HEX and OCT values like \0xA6, \xA6 or \012 if [[ "$AA" =~ "^(x|X)[0-9a-fA-F]{1,2}" || "$AA" =~ "^[0-7]{1,3}" || "$AA" =~ "^u[0-9a-fA-F]{1,4}" || "$AA" =~ "^U[0-9a-fA-F]{1,8}" ]]; then (( k += $#MATCH )) (( i += $#MATCH )) else if (( $#arg > $i+1 )) && [[ $arg[$i+1] == [xXuU] ]]; then # \x not followed by hex digits is probably an error style=unknown-token fi (( k += 1 )) # Color following char too. (( i += 1 )) # Skip parsing the escaped char. fi ;; *) continue ;; esac reply+=($j $k $style) done if [[ $arg[i] == "'" ]]; then style=dollar-quoted-argument else # If unclosed, i points past the end (( i-- )) style=dollar-quoted-argument-unclosed fi reply=($(( start_pos + $1 - 1 )) $(( start_pos + i )) $style $reply) REPLY=$i } # Highlight backtick substitutions _zsh_highlight_main_highlighter_highlight_backtick() { # buf is the contents of the backticks with a layer of backslashes removed. # last is the index of arg for the start of the string to be copied into buf. # It is either one past the beginning backtick or one past the last backslash. # offset is a count of consumed \ (the delta between buf and arg). # offsets is an array indexed by buf offset of when the delta between buf and arg changes. # It is sparse, so search backwards to the last value local buf highlight style=back-quoted-argument-unclosed style_end local -i arg1=$1 end_ i=$1 last offset=0 start subshell_has_end=0 local -a highlight_zone highlights offsets reply=() last=$(( arg1 + 1 )) # Remove one layer of backslashes and find the end while i=$arg[(ib:i+1:)[\\\\\`]]; do # find the next \ or ` if (( i > $#arg )); then buf=$buf$arg[last,i] offsets[i-arg1-offset]='' # So we never index past the end (( i-- )) subshell_has_end=$(( has_end && (start_pos + i == len) )) break fi if [[ $arg[i] == '\' ]]; then (( i++ )) # POSIX XCU 2.6.3 if [[ $arg[i] == ('$'|'`'|'\') ]]; then buf=$buf$arg[last,i-2] (( offset++ )) # offsets is relative to buf, so adjust by -arg1 offsets[i-arg1-offset]=$offset else buf=$buf$arg[last,i-1] fi else # it's an unquoted ` and this is the end style=back-quoted-argument style_end=back-quoted-argument-delimiter buf=$buf$arg[last,i-1] offsets[i-arg1-offset]='' # So we never index past the end break fi last=$i done _zsh_highlight_main_highlighter_highlight_list 0 '' $subshell_has_end $buf # Munge the reply to account for removed backslashes for start end_ highlight in $reply; do start=$(( start_pos + arg1 + start + offsets[(Rb:start:)?*] )) end_=$(( start_pos + arg1 + end_ + offsets[(Rb:end_:)?*] )) highlights+=($start $end_ $highlight) if [[ $highlight == back-quoted-argument-unclosed && $style == back-quoted-argument ]]; then # An inner backtick command substitution is unclosed, but this level is closed style_end=unknown-token fi done reply=( $(( start_pos + arg1 - 1 )) $(( start_pos + i )) $style $(( start_pos + arg1 - 1 )) $(( start_pos + arg1 )) back-quoted-argument-delimiter $highlights ) if (( $#style_end )); then reply+=($(( start_pos + i - 1)) $(( start_pos + i )) $style_end) fi REPLY=$i } # Called with a single positional argument. # Perform filename expansion (tilde expansion) on the argument and set $REPLY to the expanded value. # # Does not perform filename generation (globbing). _zsh_highlight_main_highlighter_expand_path() { (( $# == 1 )) || print -r -- >&2 "zsh-syntax-highlighting: BUG: _zsh_highlight_main_highlighter_expand_path: called without argument" # The $~1 syntax normally performs filename generation, but not when it's on the right-hand side of ${x:=y}. setopt localoptions nonomatch unset REPLY : ${REPLY:=${(Q)${~1}}} } # ------------------------------------------------------------------------------------------------- # Main highlighter initialization # ------------------------------------------------------------------------------------------------- _zsh_highlight_main__precmd_hook() { _zsh_highlight_main__command_type_cache=() } autoload -Uz add-zsh-hook if add-zsh-hook precmd _zsh_highlight_main__precmd_hook 2>/dev/null; then # Initialize command type cache typeset -gA _zsh_highlight_main__command_type_cache else print -r -- >&2 'zsh-syntax-highlighting: Failed to load add-zsh-hook. Some speed optimizations will not be used.' # Make sure the cache is unset unset _zsh_highlight_main__command_type_cache fi typeset -ga ZSH_HIGHLIGHT_DIRS_BLACKLIST