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Highlight arithmetic expansions.

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Fixes zsh-users/zsh-syntax-highlighting#188 in the case that both the
opening '((' and closing '))' have been typed,  The case that only the
opening '((' have been typed is also fixed, but requires a zsh development
build (zsh-5.1.1-52-g4bed2cf or newer); see comments within.
This commit is contained in:
Daniel Shahaf 2015-09-24 18:24:07 +00:00
parent 6488284814
commit 7b4598a764
2 changed files with 53 additions and 0 deletions
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13
highlighters/main/main-highlighter.zsh
View File

@ -183,6 +183,19 @@ _zsh_highlight_main_highlighter()
elif [[ $arg[1] == '<' || $arg[1] == '>' ]]; then
style=$ZSH_HIGHLIGHT_STYLES[redirection]
redirection=true
elif [[ $arg[1,2] == '((' ]]; then
# Arithmetic evaluation.
#
# Note: prior to zsh-5.1.1-52-g4bed2cf (workers/36669), the ${(z)...}
# splitter would only output the '((' token if the matching '))' had
# been typed. Therefore, under those versions of zsh, BUFFER="(( 42"
# would be highlighted as an error until the matching "))" are typed.
#
# We highlight just the opening parentheses, as a reserved word; this
# is how [[ ... ]] is highlighted, too.
style=$ZSH_HIGHLIGHT_STYLES[reserved-word]
_zsh_highlight_main_add_region_highlight $start_pos $((start_pos + 2)) $style
substr_color=1
else
if _zsh_highlight_main_highlighter_check_path; then
style=$ZSH_HIGHLIGHT_STYLES[path]

40
highlighters/main/test-data/arithmetic-evaluation.zsh Normal file
View File

@ -0,0 +1,40 @@
#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# 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
# -------------------------------------------------------------------------------------------------
# Must be at command word, since the word following 'if' isn't currently considered
# a command word (issue #207).
#
# An opening '((' without matching '))' is highlighted correctly under zsh-5.1.1-52-g4bed2cf
# or newer, only (issue #188).
BUFFER='(( x == 42 ))'
expected_region_highlight=(
"1 2 $ZSH_HIGHLIGHT_STYLES[reserved-word]" # ((
)