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main: Fix alias loops in nested lists (e.g. command substitution)

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Matthew Martin 2021-02-24 21:59:05 -06:00
parent 5eb494852e
commit 1e7de25c9d
2 changed files with 42 additions and 2 deletions
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7
highlighters/main/main-highlighter.zsh
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@ -421,6 +421,11 @@ _zsh_highlight_highlighter_main_paint()
unset X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
fi
# seen_alias is a map of aliases already seen to avoid loops like alias a=b b=a
# must be local above _highlight_list for cases where _highlight_list is reentered
# e.g. alias ls='echo $(ls)'
local -A seen_alias
_zsh_highlight_main_highlighter_highlight_list -$#PREBUFFER '' 1 "$PREBUFFER$BUFFER"
# end is a reserved word
@ -510,8 +515,6 @@ _zsh_highlight_main_highlighter_highlight_list()
# in_param is analogous for parameter expansions
integer in_param=0 len=$#buf
local -a in_alias 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=()

37
highlighters/main/test-data/alias-loop-commandsubstitution.zsh Normal file
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@ -0,0 +1,37 @@
#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2021 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
# -------------------------------------------------------------------------------------------------
alias ls='echo "$(ls)"'
BUFFER='ls'
expected_region_highlight=(
'1 2 alias' # ls
)