main: Highlight the ! precommand as an error when not at the start of a pipeline.
Fixes #511.
This commit is contained in:
Daniel Shahaf
parent
6539f0d419
commit
298ef6a2fa
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@ -398,6 +398,8 @@ _zsh_highlight_main_highlighter_highlight_list()
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#
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# The states are:
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# - :start: Command word
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# - :start_of_pipeline: Start of a 'pipeline' as defined in zshmisc(1).
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# Only valid when :start: is present
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# - :sudo_opt: A leading-dash option to a precommand, whether it takes an
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# argument or not. (Example: sudo's "-u" or "-i".)
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# - :sudo_arg: The argument to a precommand's leading-dash option,
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@ -431,7 +433,7 @@ _zsh_highlight_main_highlighter_highlight_list()
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# $in_redirection. The value of $next_word from the iteration that processed
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# the operator is discarded.
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#
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local this_word next_word=':start:'
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local this_word next_word=':start::start_of_pipeline:'
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integer in_redirection
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# Processing buffer
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local proc_buf="$buf"
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@ -667,11 +669,14 @@ _zsh_highlight_main_highlighter_highlight_list()
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else
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next_word=':start:'
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highlight_glob=true
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if [[ $arg != '|' && $arg != '|&' ]]; then
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next_word+=':start_of_pipeline:'
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fi
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fi
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elif ! (( in_redirection)) && [[ $this_word == *':always:'* && $arg == 'always' ]]; then
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# try-always construct
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style=reserved-word # de facto a reserved word, although not de jure
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next_word=':start:'
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next_word=':start:' # only left brace is allowed, apparently
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elif ! (( in_redirection)) && [[ $this_word == *':start:'* ]]; then # $arg is the command word
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if (( ${+precommand_options[$arg]} )) && _zsh_highlight_main__is_runnable $arg; then
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style=precommand
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@ -684,6 +689,9 @@ _zsh_highlight_main_highlighter_highlight_list()
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case $res in
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reserved) # reserved word
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style=reserved-word
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if [[ $arg == '!' && $this_word != *':start_of_pipeline:'* ]]; then
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style=unknown-token
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fi
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#
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# Match braces.
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case $arg in
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@ -764,6 +772,9 @@ _zsh_highlight_main_highlighter_highlight_list()
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else
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# assignment to a scalar parameter.
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# (For array assignments, the command doesn't start until the ")" token.)
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#
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# Discard :start_of_pipeline:, if present, as '!' is not valid
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# after assignments.
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next_word+=':start:'
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if (( start_pos + i <= end_pos )); then
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() {
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@ -822,7 +833,7 @@ _zsh_highlight_main_highlighter_highlight_list()
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esac
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fi
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if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW:#"$arg"} ]]; then
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next_word=':start:'
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next_word=':start::start_of_pipeline:'
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fi
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else # $arg is a non-command word
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case $arg in
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@ -830,7 +841,7 @@ _zsh_highlight_main_highlighter_highlight_list()
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if $in_array_assignment; then
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style=assign
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in_array_assignment=false
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next_word+=':start:'
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next_word+=':start::start_of_pipeline:'
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elif (( in_redirection )); then
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style=unknown-token
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else
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@ -847,7 +858,7 @@ _zsh_highlight_main_highlighter_highlight_list()
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else
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if [[ $zsyh_user_options[multifuncdef] == on ]] || false # TODO: or if the previous word was a command word
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then
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next_word+=':start:'
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next_word+=':start::start_of_pipeline:'
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fi
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style=reserved-word
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fi
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@ -0,0 +1,39 @@
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#!/usr/bin/env zsh
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# -------------------------------------------------------------------------------------------------
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# Copyright (c) 2018 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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BUFFER=$'\! ls | \! ls'
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expected_region_highlight=(
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'1 1 reserved-word' # \!
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'3 4 command' # ls
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'6 6 commandseparator' # |
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'8 8 unknown-token' # \!
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'10 11 command' # ls
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)
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