# ------------------------------------------------------------------------------------------------- # Copyright (c) 2010-2016 zsh-syntax-highlighting contributors # Copyright (c) 2016 Sebastian Gniazdowski (modifications) # 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 # ------------------------------------------------------------------------------------------------- typeset -gA __hsmw_highlight_main__command_type_cache # Define default styles. typeset -gA HSMW_HIGHLIGHT_STYLES : ${HSMW_HIGHLIGHT_STYLES[default]:=none} : ${HSMW_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold} : ${HSMW_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow} : ${HSMW_HIGHLIGHT_STYLES[alias]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[suffix-alias]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[builtin]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[function]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[command]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[precommand]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[commandseparator]:=none} : ${HSMW_HIGHLIGHT_STYLES[hashed-command]:=fg=green} : ${HSMW_HIGHLIGHT_STYLES[path]:=fg=magenta} : ${HSMW_HIGHLIGHT_STYLES[path_pathseparator]:=} : ${HSMW_HIGHLIGHT_STYLES[globbing]:=fg=blue,bold} : ${HSMW_HIGHLIGHT_STYLES[history-expansion]:=fg=blue,bold} : ${HSMW_HIGHLIGHT_STYLES[single-hyphen-option]:=none} : ${HSMW_HIGHLIGHT_STYLES[double-hyphen-option]:=none} : ${HSMW_HIGHLIGHT_STYLES[back-quoted-argument]:=none} : ${HSMW_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow} : ${HSMW_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow} : ${HSMW_HIGHLIGHT_STYLES[dollar-quoted-argument]:=fg=yellow} : ${HSMW_HIGHLIGHT_STYLES[back-or-dollar-double-quoted-argument]:=fg=cyan} : ${HSMW_HIGHLIGHT_STYLES[back-dollar-quoted-argument]:=fg=cyan} : ${HSMW_HIGHLIGHT_STYLES[assign]:=none} : ${HSMW_HIGHLIGHT_STYLES[redirection]:=none} : ${HSMW_HIGHLIGHT_STYLES[comment]:=fg=black,bold} : ${HSMW_HIGHLIGHT_STYLES[newline]:=fg=black,bold} # '\n' strings typeset -gA __HSMW_HIGHLIGHT_TOKENS_TYPES __HSMW_HIGHLIGHT_TOKENS_TYPES=( # Precommand 'builtin' 1 'command' 1 'exec' 1 'nocorrect' 1 'noglob' 1 'pkexec' 1 # immune to #121 because it's usually not passed --option flags # Control flow # Tokens that, at (naively-determined) "command position", are followed by # a de jure command position. All of these are reserved words. $'\x7b' 2 # block $'\x28' 2 # subshell '()' 2 # anonymous function 'while' 2 'until' 2 'if' 2 'then' 2 'elif' 2 'else' 2 'do' 2 'time' 2 'coproc' 2 '!' 2 # reserved word; unrelated to $histchars[1] # Command separators '|' 3 '||' 3 ';' 3 '&' 3 '&&' 3 '|&' 3 '&!' 3 '&|' 3 # ### 'case' syntax, but followed by a pattern, not by a command # ';;' ';&' ';|' ) # Get the type of a command. # # Uses the zsh/parameter module if available to avoid forks, and a # wrapper around 'type -w' as fallback. # # Takes a single argument. # # The result will be stored in REPLY. -hsmw-highlight-main-type() { REPLY=$__hsmw_highlight_main__command_type_cache[(e)$1] [[ -z "$REPLY" ]] && { if zmodload -e zsh/parameter; then if (( $+aliases[(e)$1] )); then REPLY=alias elif (( $+functions[(e)$1] )); then REPLY=function elif (( $+builtins[(e)$1] )); then REPLY=builtin elif (( $+commands[(e)$1] )); then REPLY=command elif (( $+saliases[(e)${1##*.}] )); then REPLY='suffix alias' elif (( $reswords[(Ie)$1] )); then REPLY=reserved # 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 second disjunct mimics the isrelative() C call from the zsh bug. elif [[ $1 != */* || "${+ZSH_ARGZERO}" = "1" ]] && ! builtin type -w -- $1 >/dev/null 2>&1; then REPLY=none fi fi [[ -z "$REPLY" ]] && REPLY="${$(LC_ALL=C builtin type -w -- $1 2>/dev/null)##*: }" __hsmw_highlight_main__command_type_cache[(e)$1]=$REPLY } } # 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: assignment to execute it if matches -hsmw-highlight-stack-pop() { [[ $braces_stack[1] == $1 ]] && { braces_stack[1]="" style=reserved-word } } # Below are variables that must be defined in outer # scope so that they are reachable in *-process() # # local right_brace_is_recognised_everywhere # integer path_dirs_was_set # integer multi_func_def # integer ointeractive_comments -hsmw-highlight-fill-option-variables() { if [[ -o ignore_braces ]] || eval '[[ -o ignore_close_braces ]] 2>/dev/null'; then right_brace_is_recognised_everywhere=0 else right_brace_is_recognised_everywhere=1 fi if [[ -o path_dirs ]]; then path_dirs_was_set=1 else path_dirs_was_set=0 fi if [[ -o multi_func_def ]]; then multi_func_def=1 else multi_func_def=0 fi if [[ -o interactive_comments ]]; then ointeractive_comments=1 else ointeractive_comments=0 fi } # Main syntax highlighting function. -hsmw-highlight-process() { emulate -L zsh setopt extendedglob bareglobqual nonomatch noksharrays (( path_dirs_was_set )) && setopt PATH_DIRS (( ointeractive_comments )) && local interactive_comments= # _set_ to empty # Variable declarations and initializations # in_array_assignment true between 'a=(' and the matching ')' # braces_stack: "R" for round, "Q" for square, "Y" for curly # mybuf, cdpath_dir are used in sub-functions local start_pos="$2" end_pos highlight_glob=1 arg style in_array_assignment=0 MATCH expanded_path braces_stack buf="$1" mybuf cdpath_dir cur_cmd alias_target # arg_type can be 0, 1, 2 or 3, i.e. precommand, control flow, command separator # idx and end_idx are used in sub-functions # for this_word and next_word look below at commented integers and at state machine description integer arg_type=0 MBEGIN MEND in_redirection len=${#buf} already_added offset idx end_idx this_word=1 next_word=0 local -a match mbegin mend # integer BIT_start=1 BIT_regular=2 BIT_sudo_opt=4 BIT_sudo_arg=8 BIT_always=16 # State machine # # The states are: # - :start: Command word # - :sudo_opt: A leading-dash option to sudo (such as "-u" or "-i") # - :sudo_arg: The argument to a sudo leading-dash option that takes one, # when given as a separate word; i.e., "foo" in "-u foo" (two # words) but not in "-ufoo" (one word). # - :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 $next_word from the iteration that processed # the operator is discarded. # # Processing buffer local proc_buf="$buf" needle for arg in ${interactive_comments-${(z)buf}} \ ${interactive_comments+${(zZ+c+)buf}}; do # Initialize $next_word to its default value? (( in_redirection )) && (( --in_redirection )) (( in_redirection == 0 )) && next_word=2 # else Stall $next_word. # Initialize per-"simple command" [zshmisc(1)] variables: # # $already_added (see next paragraph) # $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" # # $already_added is set to 1 to disable adding an entry to region_highlight # for this iteration. Currently, that is done for "" and $'' strings, # which add the entry early so escape sequences within the string override # the string's color. already_added=0 style=unknown-token if (( this_word & 1 )); then in_array_assignment=0 [[ $arg == 'noglob' ]] && highlight_glob=0 fi # Compute the new $start_pos and $end_pos, skipping over whitespace in $buf. if [[ $arg == ';' ]] ; then # We're looking for either a semicolon or a newline, whichever comes # first. Both of these are rendered as a ";" (SEPER) by the ${(z)..} # flag. # # We can't use the (Z+n+) flag because that elides the end-of-command # token altogether, so 'echo foo\necho bar' (two commands) becomes # indistinguishable from 'echo foo echo bar' (one command with three # words for arguments). needle=$'[;\n]' offset=$(( ${proc_buf[(i)$needle]} - 1 )) (( start_pos += offset )) (( end_pos = start_pos + $#arg )) # Do not run default code for case when there is a new line # It shouldn't be treated as ';', i.e. shouldn't be highlighted # as unknown-token when appears after command-starting arg like "{" if [[ "${proc_buf[offset+1]}" = $'\n' ]]; then (( in_array_assignment )) && (( this_word = 2 )) || { (( this_word = 1 )); highlight_glob=1; } in_redirection=0 reply+=("$(( start_pos - 1)) $end_pos ${HSMW_HIGHLIGHT_STYLES[newline]}") proc_buf="${proc_buf[offset + $#arg + 1,len]}" start_pos=$end_pos continue else # One more short path – for ';' command separator (( in_array_assignment )) && (( this_word = 2 )) || { (( this_word = 1 )); highlight_glob=1; } in_redirection=0 [[ "${HSMW_HIGHLIGHT_STYLES[commandseparator]}" != "none" ]] && reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[commandseparator]}") proc_buf="${proc_buf[offset + $#arg + 1,len]}" start_pos=$end_pos continue fi arg_type=3 else offset=0 if [[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\[[:space:]])##)* ]]; then # The first, outer parenthesis offset="${mend[1]}" fi ((start_pos+=offset)) ((end_pos=start_pos+${#arg})) # No-hit will result in value 0 arg_type=${__HSMW_HIGHLIGHT_TOKENS_TYPES[$arg]} fi proc_buf="${proc_buf[offset + $#arg + 1,len]}" # Handle the INTERACTIVE_COMMENTS option. # # We use the (Z+c+) flag so the entire comment is presented as one token in $arg. if [[ -n ${interactive_comments+'set'} && $arg[1] == $histchars[3] ]]; then if (( this_word & 3 )); then style=comment else style=unknown-token # prematurely terminated fi # ADD reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[$style]}") start_pos=$end_pos continue fi # Analyse the current word. if [[ $arg == (<0-9>|)(\<|\>)* ]] && [[ $arg != (\<|\>)$'\x28'* ]]; then # A '<' or '>', possibly followed by a digit in_redirection=2 fi # Special-case the first word after 'sudo'. if (( ! in_redirection )); then if (( this_word & 4 )) && [[ $arg != -* ]]; then (( this_word = this_word ^ 4 )) fi # Parse the sudo command line if (( this_word & 4 )); then case "$arg" in # Flag that requires an argument '-'[Cgprtu]) (( this_word & 1 )) && (( this_word = this_word ^ 1 )) (( next_word = 8 )) ;; # This prevents misbehavior with sudo -u -otherargument '-'*) (( this_word & 1 )) && (( this_word = this_word ^ 1 )) (( next_word = next_word | 1 )) (( next_word = next_word | 4 )) ;; *) ;; esac elif (( this_word & 8 )); then (( next_word = next_word | 4 )) (( next_word = next_word | 1 )) fi fi expanded_path="" # The Great Fork: is this a command word? Is this a non-command word? if (( this_word & 16 )) && [[ $arg == 'always' ]]; then # try-always construct style=reserved-word # de facto a reserved word, although not de jure (( next_word = 1 )) elif (( this_word & 1 )) && (( in_redirection == 0 )); then # $arg is the command word cur_cmd="$arg" if (( arg_type == 1 )); then style=precommand elif [[ "$arg" = "sudo" ]]; then style=precommand (( next_word & 2 )) && (( next_word = next_word ^ 2 )) (( next_word = next_word | 4 )) (( next_word = next_word | 1 )) else # Special-case: command word is '$foo', like that, without braces or anything. # # 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. if [[ ${arg[1]} == \$ ]] && (( ${+parameters} )) && [[ ${arg:1} = (#m)([a-zA-Z_][a-zA-Z0-9_]#|[0-9]##) ]] && (( ${+parameters[${MATCH}]} )); then -hsmw-highlight-main-type ${(P)MATCH} else : ${expanded_path::=${(Q)~arg}} -hsmw-highlight-main-type $expanded_path fi case $REPLY in reserved) # reserved word style=reserved-word if [[ $arg == $'\x7b' ]]; then braces_stack='Y'"$braces_stack" elif [[ $arg == $'\x7d' ]]; then # We're at command word, so no need to check $right_brace_is_recognised_everywhere -hsmw-highlight-stack-pop 'Y' [[ $style == "reserved-word" ]] && (( next_word = next_word | 16 )) fi ;; 'suffix alias') style=suffix-alias;; alias) () { integer insane_alias case $arg in # Issue #263: aliases with '=' on their LHS. # # There are three cases: # # - Unsupported, breaks 'alias -L' output, but invokable: ('='*) :;; # - Unsupported, not invokable: (*'='*) insane_alias=1;; # - The common case: (*) :;; esac if (( insane_alias )); then style=unknown-token else style=alias zmodload -e zsh/parameter && alias_target=${aliases[$arg]} || alias_target="${"$(alias -- $arg)"#*=}" [[ ${__HSMW_HIGHLIGHT_TOKENS_TYPES[$alias_target]} = "1" && "$arg_type" != "1" ]] && __HSMW_HIGHLIGHT_TOKENS_TYPES[$arg]="1" fi } ;; builtin) style=builtin;; function) style=function;; command) style=command;; hashed) style=hashed-command;; none) # Assign? if [[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[[^\]]#\])(|[+])=* ]] || [[ $arg == [0-9]##(|[+])=* ]]; then style=assign # Assignment to a scalar parameter or to array # (For array assignments, the command doesn't start until the ")" token.) [[ $arg[-1] == '(' ]] && in_array_assignment=1 || (( next_word = next_word | 1 )) elif [[ $arg[1] = $histchars[1] && -n "${arg[2]}" ]]; then style=history-expansion elif [[ $arg[1] == $histchars[2] ]]; then style=history-expansion elif (( arg_type == 3 )); then # This highlights empty commands (semicolon follows nothing) as an error. # Zsh accepts them, though. (( this_word & 2 )) && style=commandseparator elif [[ $arg[1,2] == '((' ]]; then # Arithmetic evaluation. # # Note: prior to zsh-5.1.1-52-g4bed2cf (workers/36669), the ${(z)...} # splitter would only output the '((' token if the matching '))' had # been typed. Therefore, under those versions of zsh, BUFFER="(( 42" # would be highlighted as an error until the matching "))" are typed. # # We highlight just the opening parentheses, as a reserved word; this # is how [[ ... ]] is highlighted, too. # ADD reply+=("$start_pos $(( start_pos + 2 )) ${HSMW_HIGHLIGHT_STYLES[reserved-word]}") already_added=1 # ADD [[ $arg[-2,-1] == '))' ]] && reply+=("$(( end_pos - 2 )) $end_pos ${HSMW_HIGHLIGHT_STYLES[reserved-word]}") elif [[ $arg == '()' ]]; then # anonymous function style=reserved-word elif [[ $arg == $'\x28' ]]; then # subshell style=reserved-word braces_stack='R'"$braces_stack" elif (( this_word & 14 )); then style=default fi ;; *) # ADD # reply+=("$start_pos $end_pos commandtypefromthefuture-$REPLY") already_added=1 ;; esac fi # in_redirection || BIT_regular || BIT_sudo_opt || BIT_sudo_arg elif (( in_redirection + this_word & 14 )) then # $arg is a non-command word case $arg in ']]') style=reserved-word ;; $'\x29') # subshell or end of array assignment if (( in_array_assignment )); then style=assign in_array_assignment=0 (( next_word = next_word | 1 )) else -hsmw-highlight-stack-pop 'R' fi;; $'\x28\x29') # possibly a function definition # || false # TODO: or if the previous word was a command word (( multi_func_def )) && (( next_word = next_word | 1 )) style=reserved-word ;; $'\x7d') # right brace # # 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 (( right_brace_is_recognised_everywhere )); then -hsmw-highlight-stack-pop 'Y' [[ $style == reserved-word ]] && (( next_word = next_word | 16 )) #else # Fall through to the catchall case at the end. fi ;| '--'*) style=double-hyphen-option;; '-'*) style=single-hyphen-option;; "'"*) style=single-quoted-argument;; '"'*) # ADD reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[double-quoted-argument]}") -hsmw-highlight-string already_added=1 ;; \$\'*) # ADD reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[dollar-quoted-argument]}") -hsmw-highlight-dollar-string already_added=1 ;; '`'*) style=back-quoted-argument;; [*?]*|*[^\\][*?]*) (( highlight_glob )) && style=globbing || style=default;; *) if [[ $arg = $'\x7d' ]] && (( right_brace_is_recognised_everywhere )); then # was handled by the $'\x7d' case above elif [[ $arg[1] = $histchars[1] && -n "${arg[2]}" ]]; then style=history-expansion elif (( arg_type == 3 )); then style=commandseparator elif (( in_redirection == 2 )); then style=redirection else if -hsmw-highlight-check-path; then # ADD reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[path]}") already_added=1 [[ -n "$HSMW_HIGHLIGHT_STYLES[path_pathseparator]" && "$HSMW_HIGHLIGHT_STYLES[path]" != "$HSMW_HIGHLIGHT_STYLES[path_pathseparator]" ]] && { local pos for (( pos = start_pos; pos <= end_pos; pos++ )) ; do # ADD [[ ${buf[pos]} == "/" ]] && reply+=("$(( pos - 1 )) $pos ${HSMW_HIGHLIGHT_STYLES[path_pathseparator]}") done } else style=default fi fi ;; esac fi # ADD (( already_added == 0 )) && [[ "${HSMW_HIGHLIGHT_STYLES[$style]}" != "none" ]] && reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[$style]}") if (( arg_type == 3 )); then if [[ $arg == ';' ]] && (( in_array_assignment )); then # literal newline inside an array assignment (( next_word = 2 )) else (( next_word = 1 )) highlight_glob=1 fi elif (( arg_type == 1 || arg_type == 2 )) && (( this_word & 1 )); then (( next_word = 1 )) elif [[ $arg == "repeat" ]] && (( this_word & 1 )); then # skip the repeat-count word in_redirection=2 # The redirection mechanism assumes $this_word describes the word # following the redirection. Make it so. # # That word can be a command word with shortloops (`repeat 2 ls`) # or a command separator (`repeat 2; ls` or `repeat 2; do ls; done`). # # The repeat-count word will be handled like a redirection target. (( this_word = 3 )) fi start_pos=$end_pos # This is the default/common codepath. (( in_redirection == 0 )) && (( this_word = next_word )) #else # Stall $this_word. done } # Check if $arg 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). -hsmw-highlight-check-path() { : ${expanded_path:=${(Q)~arg}} [[ -z $expanded_path ]] && return 1 [[ -e $expanded_path ]] && return 0 # Search the path in CDPATH, only for CD command [[ "$cur_cmd" = "cd" ]] && for cdpath_dir in $cdpath ; do [[ -e "$cdpath_dir/$expanded_path" ]] && return 0 done # It's not a path. return 1 } # Highlight special chars inside double-quoted strings -hsmw-highlight-string() { mybuf="$arg" idx=start_pos while [[ "$mybuf" = (#b)[^\$\\]#((\$[a-zA-Z0-9_:]##(\[[^\]]#\])(#c0,1))|(\$[{](\([a-zA-Z0@%#]##\))(#c0,1)[a-zA-Z0-9_:#]##(\[[^\]]#\])(#c0,1)[}])|[\\][\'\"\$]|[\\](*))(*) ]]; do [[ -n "${match[7]}" ]] && { # Skip following char – it is quoted. Choice is # made to not highlight such quoting idx+=${mbegin[1]}+1 mybuf="${match[7]:1}" } || { idx+=${mbegin[1]}-1 end_idx=idx+${mend[1]}-${mbegin[1]}+1 mybuf="${match[8]}" # ADD reply+=("$idx $end_idx ${HSMW_HIGHLIGHT_STYLES[back-or-dollar-double-quoted-argument]}") idx=end_idx } done } # Highlight special chars inside dollar-quoted strings -hsmw-highlight-dollar-string() { local i j k style local AA integer c # Starting dollar-quote is at 1:2, so start parsing at offset 3 in the string. for (( i = 3 ; i < end_pos - start_pos ; i += 1 )) ; do (( j = i + start_pos - 1 )) (( k = j + 1 )) case "$arg[$i]" in "\\") style=back-dollar-quoted-argument for (( c = i + 1 ; c <= end_pos - start_pos ; c += 1 )); do [[ "$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 # ADD reply+=("$j $k ${HSMW_HIGHLIGHT_STYLES[$style]}") done } # ------------------------------------------------------------------------------------------------- # Main highlighter initialization # ------------------------------------------------------------------------------------------------- -hsmw-highlight-init() { __hsmw_highlight_main__command_type_cache=() } __HSMW_MH_SOURCED=1 # vim:ft=zsh:sw=2