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Highlight parameter expansions that are a command word.

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Fixes zsh-users/zsh-syntax-highlighting#101.
This commit is contained in:
Daniel Shahaf 2015-11-17 01:33:30 +00:00
parent bdc1449733
commit 4fcfb15913
2 changed files with 50 additions and 0 deletions
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14
highlighters/main/main-highlighter.zsh
View file

@ -267,6 +267,20 @@ _zsh_highlight_main_highlighter()
_zsh_highlight_main_highlighter_expand_path $arg
local expanded_arg="$REPLY"
local res="$(_zsh_highlight_main__type ${expanded_arg})"
() {
# Special-case: command word is '$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.
local -a match mbegin mend
local MATCH; integer MBEGIN MEND
if [[ $res == *': none' ]] && (( ${+parameters} )) &&
[[ ${arg[1]} == \$ ]] && [[ ${arg:1} =~ ^([A-Za-z_][A-Za-z0-9_]*|[0-9]+)$ ]]; then
res="$(_zsh_highlight_main__type ${(P)MATCH})"
fi
}
case $res in
*': reserved') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];;
*': suffix alias')

36
highlighters/main/test-data/commmand-parameter.zsh Normal file
View file

@ -0,0 +1,36 @@
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2015 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
# -------------------------------------------------------------------------------------------------
x=/usr/bin/env
BUFFER='$x "argument"'
expected_region_highlight=(
"1 2 $ZSH_HIGHLIGHT_STYLES[command]" # $x
"4 13 $ZSH_HIGHLIGHT_STYLES[double-quoted-argument]" # "argument"
)