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Upstream commit:
Date: Mon, 29 Apr 2019 19:13:37 +0500
expand: Fix trailing newlines processing in backquote expanding
According to POSIX.1-2008 we should remove newlines only at the end of
the substitution. Newlines-only substitions causes dash to remove
newlines before beggining of the substitution. The following code:
cat <<END
1
$(echo "")
2
END
prints "1<newline>2" instead of expected "1<newline><newline>2".
This patch fixes trailing newlines processing in backquote expanding.
Signed-off-by: Nikolai Merinov <n.merinov@inango-systems.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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See added testcases
function old new delta
run_pipe 1723 1784 +61
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
expand_vars_to_list 2129 2197 +68
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
builtin_exec 25 83 +58
parse_stream 2242 2261 +19
run_pipe 1782 1787 +5
static.pseudo_null_str - 3 +3
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(add/remove: 1/0 grow/shrink: 3/0 up/down: 85/0) Total: 85 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Sometimes variable expansions yield empty strings, and if they happen to
be a command someone wants to run like `$foo`, then hush currently
segfaults. So handle `` and $().
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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fix a case where we forget to copy `cmd` text;
optimize nommu heredoc helper by not passing environment to it;
add several tests
function old new delta
add_till_closing_paren 256 308 +52
parse_stream 2337 2378 +41
add_till_backquote 82 111 +29
re_execute_shell 269 284 +15
handle_dollar 802 812 +10
parse_stream_dquoted 316 320 +4
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(add/remove: 0/0 grow/shrink: 6/0 up/down: 151/0) Total: 151 bytes
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hush: move fixed testsuites out of hush-bugs/*
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