6e816d8711
This is both reasonable and a common GNUism that a lot of ported software expects. Universally process \r, \n, and \t into carriage return, newline, and tab respectively. Newline still doesn't function in contexts where it can't (e.g. BRE), but we process it anyways rather than passing UB \n (escaped ordinary) through to the underlying regex engine. Adding a --posix flag to disable these was considered, but sed.1 already declares this version of sed a super-set of POSIX specification and this behavior is the most likely expected when one attempts to use one of these escape sequences in pattern space. This differs from pre-r197362 behavior in that we now honor the three arguably most common escape sequences used with sed(1) and we do so outside of character classes, too. Other escape sequences, like \s and \S, will come later when GNU extensions are added to libregex; sed will likely link against libregex by default, since the GNU extensions tend to be fairly un-intrusive. PR: 229925 Reviewed by: bapt, emaste, pfg Differential Revision: https://reviews.freebsd.org/D22750
98 lines
3.0 KiB
Bash
Executable File
98 lines
3.0 KiB
Bash
Executable File
#
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# Copyright 2017 Dell EMC.
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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
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# 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
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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atf_test_case inplace_hardlink_src
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inplace_hardlink_src_head()
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{
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atf_set "descr" "Verify -i works with a symlinked source file"
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}
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inplace_hardlink_src_body()
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{
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echo foo > a
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atf_check ln a b
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atf_check sed -i '' -e 's,foo,bar,g' b
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atf_check -o 'inline:bar\n' -s exit:0 cat b
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atf_check -s not-exit:0 stat -q '.!'*
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}
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atf_test_case inplace_symlink_src
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inplace_symlink_src_head()
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{
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atf_set "descr" "Verify -i works with a symlinked source file"
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}
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inplace_symlink_src_body()
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{
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echo foo > a
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atf_check ln -s a b
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atf_check -e not-empty -s not-exit:0 sed -i '' -e 's,foo,bar,g' b
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atf_check -s not-exit:0 stat -q '.!'*
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}
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atf_test_case inplace_command_q
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inplace_command_q_head()
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{
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atf_set "descr" "Verify -i works correctly with the 'q' command"
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}
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inplace_command_q_body()
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{
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printf '1\n2\n3\n' > a
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atf_check -o 'inline:1\n2\n' sed '2q' a
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atf_check sed -i.bak '2q' a
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atf_check -o 'inline:1\n2\n' cat a
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atf_check -o 'inline:1\n2\n3\n' cat a.bak
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atf_check -s not-exit:0 stat -q '.!'*
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}
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atf_test_case escape_subst
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escape_subst_head()
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{
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atf_set "descr" "Verify functional escaping of \\n, \\r, and \\t"
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}
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escape_subst_body()
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{
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printf "a\nt\\\t\n\tb\n\t\tc\r\n" > a
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tr -d '\r' < a > b
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printf "a\tb c\rx\n" > c
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atf_check -o 'inline:a\nt\\t\n' sed '/\t/d' a
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atf_check -o 'inline:a\nt\\t\n b\n c\r\n' sed 's/\t/ /g' a
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atf_check -o 'inline:a\nt\\t\n\t\tb\n\t\t\t\tc\r\n' sed 's/\t/\t\t/g' a
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atf_check -o 'inline:a\nt\n\tb\n\t\tc\r\n' sed 's/\\t//g' a
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atf_check -o file:b sed 's/\r//' a
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atf_check -o 'inline:abcx\n' sed 's/[ \r\t]//g' c
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}
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atf_init_test_cases()
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{
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atf_add_test_case inplace_command_q
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atf_add_test_case inplace_hardlink_src
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atf_add_test_case inplace_symlink_src
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atf_add_test_case escape_subst
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}
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